🕷️ Crawler Inspector

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Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 104 (from laksa187)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa104.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.usps.com/ship/shipping-restrictions.htm\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.usps.com/ship/shipping-restrictions.htm\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.usps.com\/ship\/shipping-restrictions.htm","crawl_time":1775730637,"first_indexed_time":1416249440,"http_code":200,"src_unparsed":"com,usps!www,\/ship\/shipping-restrictions.htm s443","src_root_hash":"15803321970422257304","history_drop_reason":null,"meta_title":"Shipping Restrictions & HAZMAT - What Can You Send in the Mail? | USPS","meta_descriptions":["Learn about USPS guidelines on hazardous materials (HAZMAT) or dangerous goods, what it means if an item is restricted or prohibited, and if you may ship food, batteries, alcohol, hand sanitizer, liquids, marijuana, or tobacco through the mail."],"attrs_boilerpipe_text":"When you mail a letter or send a package, you must follow U.S. and USPS\n®\nguidelines. Learn what things you can and can't send in the U.S. mail:\nSome items are prohibited (completely forbidden).\nSome are restricted (allowed under certain conditions).\nHazardous materials (HAZMAT) might be prohibited or restricted.\nIf you're shipping internationally, see\nInternational Shipping Prohibitions & Restrictions\n.\nReminder:\nMercury (a silver metal that's liquid at room temperature) is prohibited and can't be mailed, whether by itself or in devices like antique thermometers, barometers, and switches. However, items that contain small amounts of mercury vapor, like compact fluorescent lamps, can be mailed domestically.\nLearn More\nAll USPS customers are responsible for:\nReviewing\nUSPS Publication 52, Hazardous, Restricted, & Perishable Mail\nto find out if your item is mailable.\nComplying with Postal Service\n™\nregulations and U.S. laws and regulations.\nPacking your package securely and marking it as required. You can take your package to a Post Office\n™\nlocation to make sure it is labeled correctly.\nHazardous materials are substances that could injure people or cause damage if not handled properly, like chemicals or flammable items.\nHAZMAT also includes\nlithium batteries\n(like the ones in cell phones and electronics; they contain a lot of energy and can be a fire risk) and\nliquid mercury\n:\nSome HAZMAT is prohibited—you can’t send it through USPS and must use another carrier.\nOther HAZMAT is restricted—you can mail it if you follow all the rules.\nSome HAZMAT can only be sent by ground transportation—it can’t go on airplanes.\nIf you are mailing packages that contain hazardous materials (HAZMAT), you must separate HAZMAT packages from all other packages and present them in a container marked \"HAZMAT.\"\nIf you knowingly mail materials that are dangerous or injurious to life, health, or property, for each violation, you face a civil penalty of at least $250 (but not more than $100,000), the costs of any cleanup, and damages. You may also face criminal penalties.\nYou can't send these items in the U.S. mail:\nAir Bags\nAmmunition\nExplosives\nGasoline\nLiquid Mercury\nMarijuana (medical or otherwise);\nhemp\/CBD is allowed, but restricted\nExamples of mailable gases and aerosols include propane, butane, and fire extinguishers. Make sure you read about the specific rules and restrictions for sending mailable gases.\nList of Mailable Gases\nBeer, wine, and liquor may not be sent through the mail, except in limited circumstances.\nPlease note, if you want to reuse a box that has alcoholic beverage labels on it, remove all logos and labels so your package will pass through the mail system.\nExceptions for Mailing Intoxicating Liquors\nCigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically. Customers are advised to review the Cigarettes, Cigars, and Tobacco\nDefinitions\nand\nMailability\n.\nExceptions for Mailing Cigarette & Smokeless Tobacco\nCigarettes and smokeless tobacco are mailable only in the below circumstances:\nIntra-Alaskan and intra-Hawaiian shipments\nBusiness\/regulatory purposes\nSmall-quantity “gift” shipments to individuals\nIndividual returns of an unacceptable tobacco product to a manufacturer\nOther Shipping & Packaging Requirements\nAllowable cigarette or smokeless tobacco shipments must be approved by a Postal employee at a Post Office\n™\n. The Postal employee will verify that an individual recipient is of legal age to receive the shipment.\nTobacco Shipments to APO\/FPO\/DPO\nWhen shipping to APO\/FPO\/DPO locations in foreign countries, USPS treats the mail as domestic mail, but shipping is still subject to those foreign countries’ prohibitions and restrictions. Customers should be aware that size and weight standards may differ from USPS standards. See\nInternational Country Listings\nto find country-specific prohibitions and restrictions.\nDry ice is permitted to be mailed when it is used as a refrigerant to cool the content of a mailable hazardous or nonhazardous material. Packages containing dry ice must be packed in containers that permit the release of carbon dioxide gas.\nShipping Dry Ice Rules & Restrictions\nOnly licensed manufacturers and dealers may mail or receive handguns. Even though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations.\nAdditional Information on Mailing Firearms\nTo ship hand sanitizers, including wipes, you must use Parcel Select\n®\nservice (only for businesses) or USPS Ground Advantage\n®\nservice.\nMost hand sanitizers, including wipes, contain alcohol and are flammable in nature and are therefore handled and shipped as hazardous matter (HAZMAT) in the U.S. Mail.  As flammable materials, these products are limited to surface transportation-only in domestic mail. It is prohibited to send these materials by International Mail including APO\/FPO\/DPO (military) destinations.\nIf you are unsure whether or not the product that you are shipping is flammable, please check with the manufacturer of the product before mailing.\nAdditional Resources\nPublication 52-Hazardous, Restricted and Perishable Mail Packaging Instructions 3A\nA cannabis-derived substance with tetrahydrocannabinol (THC) content of 0.3 percent or less is legally hemp. Cannabidiol (CBD) is a compound found in the flower resin of cannabis plants.\nYou can send certain hemp-based products domestically (within the U.S. and to U.S. territories) if you comply with all applicable laws. (You cannot send hemp and hemp-derived products to international or military destinations.)\nTo mail legal hemp and hemp-based products, including CBD, you must:\nFollow the guidelines outlined under\nPublication 52, Section 453\nComply with all applicable federal, state, and local laws pertaining to hemp production, processing, distribution, and sales\nRetain records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing\nFor domestic mailings only, small consumer-type primary lithium cells or batteries (lithium metal or lithium alloy) like those used to power cameras and flashlights are mailable domestically under certain conditions.\nLithium Batteries in Electronic Devices\nIf you're mailing pre-owned, damaged, or defective electronic devices containing or packaged with lithium batteries, you must send them via ground transportation; they are prohibited in air transportation.\nThese devices must be marked on the outer packaging with the text, \"\nRestricted Electronic Device\n\" and \"\nSurface Transportation Only\n.\"\nShipping Lithium Batteries\nExcept in limited circumstances, pets and warm-blooded animals may not go in the mail. Shipments of live animals, including poultry, reptiles, and bees, have very specific packaging requirements. Although you can drop these animals at any Post Office\n™\nlocation, they are only shipped when the appropriate transportation is available. You'll also need to pay an\nextra handling fee\nthat varies based on the shipping service you use.\nRegulations on Shipping Live Animals\nSafety Matches\nSafety matches have treated match heads that will only ignite when struck against a specially prepared surface like a match book, card, or box. Safety matches must be sent via ground transportation and cannot be mailed internationally.\nAdditional Information on Mailing Safety Matches\nStrike-Anywhere Matches\nStrike-anywhere matches will light from friction against any surface. Strike-anywhere matches may not be mailed domestically.\nWhen sending medicine or drugs through the mail, mailers and shippers must know the characteristics of the items they are sending and treat them correctly. Medicines are controlled substances and are subject to strict regulations. Prescription medications may only be mailed by Drug Enforcement Administration (DEA) registered distributors. Similar regulations apply to some over-the-counter medications.\nShipping Controlled Substances & Drugs\nMercury is a toxic metal that’s a shiny, silver liquid at room temperature. It's often found in antique devices like thermometers, barometers, thermostats, and switches.\nLiquid Mercury\nLiquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier.\nMercury Vapor Devices\nSome consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable. See\nPub 52, Section 348.22g\nand\nPackaging Instruction 8C\nfor more details.\nFlammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface only), and is sent within the quantity limitations and packaging requirements. Latex Paint or a similar water-based paint product that is not flammable or combustible is not regulated as a hazardous material, and therefore, is not restricted.\nAdditional Information on Mailing Paint\nPerishable items are materials that can deteriorate in the mail, such as live animals, food, and plants. Permissible perishable items are sent at the mailer’s own risk. These items must be specially packaged and mailed so that they arrive before they begin to deteriorate. You’ll also need to pay an\nextra handling fee\nthat varies based on the shipping service you use.\nShipping Perishable Materials Guidelines","attrs_markdown":"[Skip to Main Content](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#maincontent)\n\n## [English Use arrow key to access related widget.](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\n[English]()\n\n[Español]()\n\n- [Customer Service](https:\/\/www.usps.com\/customer-service\/customer-service.htm)\n\n- [My USPS ›](https:\/\/www.usps.com\/myusps\/welcome.htm)\n\n[Go to USPS.com Site Index.](https:\/\/www.usps.com\/globals\/site-index.htm) [Skip to Main Content](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#endnav) [Skip All Utility Navigation](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#skipallnav)\n\n[Current language: English](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\n\n- [English]()\n- [Español]()\n- [Chinese]()\n\n[Locations](https:\/\/tools.usps.com\/locations\/) [Support](https:\/\/www.usps.com\/help\/contact-us.htm) [Informed Delivery](https:\/\/informeddelivery.usps.com\/) [Register \/ Sign In](https:\/\/verified.usps.com\/login?goto=https%3A%2F%2Fwww.usps.com%2Fship%2Fshipping-restrictions.htm)\n\n[Skip all category navigation links](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#endnav)\n\n[![Image of USPS.com logo.](https:\/\/www.usps.com\/global-elements\/header\/images\/utility-header\/logo-sb.svg)](https:\/\/www.usps.com\/)\n\n[![hamburger menu Icon](https:\/\/www.usps.com\/assets\/images\/home\/hamburger.svg)](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm) [![USPS mobile logo](https:\/\/www.usps.com\/assets\/images\/home\/logo_mobile.svg)](https:\/\/www.usps.com\/) [![Search Icon](https:\/\/www.usps.com\/assets\/images\/home\/search.svg)](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\n\n[Sign In](https:\/\/verified.usps.com\/login?goto=https%3A%2F%2Fwww.usps.com%2Fship%2Fshipping-restrictions.htm)\n\n- [Skip Quick Tools Links](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#navmailship) [Quick Tools](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\n  - 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Learn what things you can and can't send in the U.S. mail:\n\n- Some items are prohibited (completely forbidden).\n- Some are restricted (allowed under certain conditions).\n- Hazardous materials (HAZMAT) might be prohibited or restricted.\n\nIf you're shipping internationally, see [International Shipping Prohibitions & Restrictions](https:\/\/www.usps.com\/international\/shipping-restrictions.htm).\n\n![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https:\/\/www.usps.com\/assets\/images\/ship\/shipping-restrictions-hero.jpg)\n\n**Reminder:** Mercury (a silver metal that's liquid at room temperature) is prohibited and can't be mailed, whether by itself or in devices like antique thermometers, barometers, and switches. However, items that contain small amounts of mercury vapor, like compact fluorescent lamps, can be mailed domestically. [Learn More](https:\/\/about.usps.com\/newsroom\/national-releases\/2024\/0621-mercury-remains-prohibited-in-the-mail.htm)\n\n## Mailer Guidelines\nAll USPS customers are responsible for:\n\n1. Reviewing [*USPS Publication 52, Hazardous, Restricted, & Perishable Mail*](https:\/\/pe.usps.com\/text\/pub52\/welcome.htm) to find out if your item is mailable.\n2. Complying with Postal Service™ regulations and U.S. laws and regulations.\n3. Packing your package securely and marking it as required. You can take your package to a Post Office™ location to make sure it is labeled correctly.\n\n## Shipping Hazardous Materials (HAZMAT)\nHazardous materials are substances that could injure people or cause damage if not handled properly, like chemicals or flammable items.\n\nHAZMAT also includes [lithium batteries](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#lithium-batteries) (like the ones in cell phones and electronics; they contain a lot of energy and can be a fire risk) and [liquid mercury](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#mercury):\n\n- Some HAZMAT is prohibited—you can’t send it through USPS and must use another carrier.\n- Other HAZMAT is restricted—you can mail it if you follow all the rules.\n- Some HAZMAT can only be sent by ground transportation—it can’t go on airplanes.\n- If you are mailing packages that contain hazardous materials (HAZMAT), you must separate HAZMAT packages from all other packages and present them in a container marked \"HAZMAT.\"\n\nIf you knowingly mail materials that are dangerous or injurious to life, health, or property, for each violation, you face a civil penalty of at least \\$250 (but not more than \\$100,000), the costs of any cleanup, and damages. You may also face criminal penalties.\n\n## Domestically Prohibited Items\nYou can't send these items in the U.S. mail:\n\n- Air Bags\n- Ammunition\n- Explosives\n- Gasoline\n- Liquid Mercury\n- Marijuana (medical or otherwise); [hemp\/CBD is allowed, but restricted](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#hemp-cbd)\n\n## Domestically Restricted Items\nYou can send the following items if you follow all the rules and restrictions. See a more complete list in [USPS Publication 52, Hazardous, Restricted, & Perishable Mail](https:\/\/pe.usps.com\/text\/pub52\/index.htm).\n\n[Expand Allor close all content topics for immediately following heading](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\n\n#### [Open or Close content below Aerosols](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nExamples of mailable gases and aerosols include propane, butane, and fire extinguishers. Make sure you read about the specific rules and restrictions for sending mailable gases.\n\n[**List of Mailable Gases**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_021.htm)\n\n#### [Open or Close content below Alcoholic Beverages](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nBeer, wine, and liquor may not be sent through the mail, except in limited circumstances.\n\nPlease note, if you want to reuse a box that has alcoholic beverage labels on it, remove all logos and labels so your package will pass through the mail system.\n\n[**Exceptions for Mailing Intoxicating Liquors**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_006.htm)\n\n#### [Open or Close content below Cigarettes, Cigars, & Tobacco](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nCigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically. Customers are advised to review the Cigarettes, Cigars, and Tobacco [Definitions](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_025.htm) and [Mailability](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_026.htm).\n\n**Exceptions for Mailing Cigarette & Smokeless Tobacco**\n\nCigarettes and smokeless tobacco are mailable only in the below circumstances:\n\n- Intra-Alaskan and intra-Hawaiian shipments\n- Business\/regulatory purposes\n- Small-quantity “gift” shipments to individuals\n- Individual returns of an unacceptable tobacco product to a manufacturer\n\n**Other Shipping & Packaging Requirements**\n\nAllowable cigarette or smokeless tobacco shipments must be approved by a Postal employee at a Post Office™. The Postal employee will verify that an individual recipient is of legal age to receive the shipment.\n\n**Tobacco Shipments to APO\/FPO\/DPO**\n\nWhen shipping to APO\/FPO\/DPO locations in foreign countries, USPS treats the mail as domestic mail, but shipping is still subject to those foreign countries’ prohibitions and restrictions. Customers should be aware that size and weight standards may differ from USPS standards. See [International Country Listings](https:\/\/pe.usps.com\/text\/imm\/ab_toc.htm) to find country-specific prohibitions and restrictions.\n\n#### [Open or Close content below Cremated Remains](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nUSPS® is the only shipping company that ships cremated remains (human or pet ashes). You may ship cremated remains domestically but must use Priority Mail Express®. Make sure the inner primary container is strong, durable, and properly sealed. For the outer shipping package, you must use one of our Priority Mail Express® Cremated Remains Kits . Order free cremated remains shipping supplies on [The Postal Store®](https:\/\/store.usps.com\/store\/results?Ntt=cremated&_requestid=171234).\n\n[**Watch How to Ship Cremated Remains Safely Video**](https:\/\/about.usps.com\/newsroom\/cremated-remains.htm)   \n [**Publication 139 - How to Package & Ship Cremated Remains**](https:\/\/about.usps.com\/publications\/pub139.pdf)  \n [**Other Guidelines on Shipping & Packaging Cremated Remains**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_017.htm?q=cremated&t=H&s=R&p=1&c=Pub52)\n\n#### [Open or Close content below Dry Ice](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nDry ice is permitted to be mailed when it is used as a refrigerant to cool the content of a mailable hazardous or nonhazardous material. Packages containing dry ice must be packed in containers that permit the release of carbon dioxide gas.\n\n[**Shipping Dry Ice Rules & Restrictions**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_028.htm#ep900106)\n\n#### [Open or Close content below Firearms](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nOnly licensed manufacturers and dealers may mail or receive handguns. Even though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations.\n\n[**Additional Information on Mailing Firearms**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_009.htm)\n\n#### [Open or Close content below Glues](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nGlues have a wide range of flashpoints. You are responsible for knowing the flashpoint and toxicity of the glue you want to mail. Flammable glues may be mailed if they are a consumer commodity. Some glues may only be sent by ground transportation. Glues are categorized as “adhesives” in the below resources.\n\n[**Shipping Flammable & Combustible Liquids**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_022.htm)  \n [**Packaging Instructions for Combustible Liquids**](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_011.htm)\n\n#### [Open or Close content below Hand Sanitizer](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nTo ship hand sanitizers, including wipes, you must use Parcel Select® service (only for businesses) or USPS Ground Advantage® service.\n\nMost hand sanitizers, including wipes, contain alcohol and are flammable in nature and are therefore handled and shipped as hazardous matter (HAZMAT) in the U.S. Mail. As flammable materials, these products are limited to surface transportation-only in domestic mail. It is prohibited to send these materials by International Mail including APO\/FPO\/DPO (military) destinations.\n\nIf you are unsure whether or not the product that you are shipping is flammable, please check with the manufacturer of the product before mailing.\n\n**Additional Resources**  \n[**Publication 52-Hazardous, Restricted and Perishable Mail Packaging Instructions 3A**](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_010.htm)\n\n#### [Open or Close content below Hemp Products (including CBD)](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nA cannabis-derived substance with tetrahydrocannabinol (THC) content of 0.3 percent or less is legally hemp. Cannabidiol (CBD) is a compound found in the flower resin of cannabis plants.\n\nYou can send certain hemp-based products domestically (within the U.S. and to U.S. territories) if you comply with all applicable laws. (You cannot send hemp and hemp-derived products to international or military destinations.)\n\nTo mail legal hemp and hemp-based products, including CBD, you must:\n\n- Follow the guidelines outlined under [Publication 52, Section 453](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_019.htm)\n- Comply with all applicable federal, state, and local laws pertaining to hemp production, processing, distribution, and sales\n- Retain records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing\n\n#### [Open or Close content below Lithium Batteries](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nFor domestic mailings only, small consumer-type primary lithium cells or batteries (lithium metal or lithium alloy) like those used to power cameras and flashlights are mailable domestically under certain conditions.\n\n**Lithium Batteries in Electronic Devices**\n\nIf you're mailing pre-owned, damaged, or defective electronic devices containing or packaged with lithium batteries, you must send them via ground transportation; they are prohibited in air transportation.\n\nThese devices must be marked on the outer packaging with the text, \"**Restricted Electronic Device**\" and \"**Surface Transportation Only**.\"\n\n[**Shipping Lithium Batteries**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_028.htm)\n\n#### [Open or Close content below Live Animals](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nExcept in limited circumstances, pets and warm-blooded animals may not go in the mail. Shipments of live animals, including poultry, reptiles, and bees, have very specific packaging requirements. Although you can drop these animals at any Post Office™ location, they are only shipped when the appropriate transportation is available. You'll also need to pay an [extra handling fee](https:\/\/www.usps.com\/ship\/mail-shipping-services.htm#perishables) that varies based on the shipping service you use.\n\n[**Regulations on Shipping Live Animals**](https:\/\/pe.usps.com\/text\/pub52\/pub52c5_008.htm)\n\n#### [Open or Close content below Matches](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\n**Safety Matches**\n\nSafety matches have treated match heads that will only ignite when struck against a specially prepared surface like a match book, card, or box. Safety matches must be sent via ground transportation and cannot be mailed internationally.\n\n[**Additional Information on Mailing Safety Matches**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_023.htm#ep899150)\n\n**Strike-Anywhere Matches**\n\nStrike-anywhere matches will light from friction against any surface. Strike-anywhere matches may not be mailed domestically.\n\n#### [Open or Close content below Medicines & Prescription Drugs](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nWhen sending medicine or drugs through the mail, mailers and shippers must know the characteristics of the items they are sending and treat them correctly. Medicines are controlled substances and are subject to strict regulations. Prescription medications may only be mailed by Drug Enforcement Administration (DEA) registered distributors. Similar regulations apply to some over-the-counter medications.\n\n[**Shipping Controlled Substances & Drugs**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_019.htm)\n\n#### [Open or Close content below Mercury](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nMercury is a toxic metal that’s a shiny, silver liquid at room temperature. It's often found in antique devices like thermometers, barometers, thermostats, and switches.\n\n**Liquid Mercury**\n\nLiquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier.\n\n**Mercury Vapor Devices**\n\nSome consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable. See [Pub 52, Section 348.22g](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_027.htm#ep1028018) and [Packaging Instruction 8C](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_028.htm#ep1000760) for more details.\n\n#### [Open or Close content below  Nail Polish](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nIf the nail polish you want to mail is flammable, you are responsible for knowing its flashpoint and toxicity. Flammable nail polishes may be mailed domestically if they are a consumer commodity. Some nail polishes may only be sent by ground transportation.\n\n[**Shipping Flammable & Combustible Liquids**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_022.htm)  \n [**Packaging Instructions for Combustible Liquids**](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_011.htm)\n\n#### [Open or Close content below  Paint](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nFlammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface only), and is sent within the quantity limitations and packaging requirements. Latex Paint or a similar water-based paint product that is not flammable or combustible is not regulated as a hazardous material, and therefore, is not restricted.\n\n[**Additional Information on Mailing Paint**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_022.htm#ep899076)\n\n#### [Open or Close content below Perfumes](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nPerfume containing alcohol may not be shipped internationally or mailed domestically using air transportation. Perfume containing alcohol, however, may be shipped within the United States by ground transportation.\n\n[**Shipping Flammable & Combustible Liquids**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_022.htm)  \n [**Packaging Instructions for Combustible Liquids**](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_011.htm)\n\n#### [Open or Close content below Perishable Items](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nPerishable items are materials that can deteriorate in the mail, such as live animals, food, and plants. Permissible perishable items are sent at the mailer’s own risk. These items must be specially packaged and mailed so that they arrive before they begin to deteriorate. You’ll also need to pay an [extra handling fee](https:\/\/www.usps.com\/ship\/mail-shipping-services.htm#perishables) that varies based on the shipping service you use.\n\n[**Shipping Perishable Materials Guidelines**](https:\/\/pe.usps.com\/text\/pub52\/pub52c5_001.htm)\n\n#### [Open or Close content below Poisons](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm)\nPoisons are considered toxins. You are responsible for knowing the toxicity of the material you want to mail. Some poisons may be sent by air and ground transport, others only by ground.\n\n[**Mailable Class 6 Materials**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_025.htm)   \n [**Packaging Instructions for Toxic Substances**](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_017.htm#ep1000127)\n\n1. Helpful Links\n   1. [Contact Us](https:\/\/www.usps.com\/help\/contact-us.htm)\n   2. [Site Index](https:\/\/www.usps.com\/globals\/site-index.htm)\n   3. [FAQs](https:\/\/faq.usps.com\/s\/)\n   4. 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All Rights Reserved.\n\n- [![Image of Facebook social media icon.](https:\/\/www.usps.com\/global-elements\/footer\/images\/facebook_logo.png)](https:\/\/www.facebook.com\/USPS?rf=108501355848630)\n- [![Image of instagram social media icon.](https:\/\/www.usps.com\/global-elements\/footer\/images\/instagram_logo.png)](https:\/\/www.instagram.com\/uspostalservice\/?hl=en)\n- [![Image of Pinterest social media icon.](https:\/\/www.usps.com\/global-elements\/footer\/images\/pinterest_logo.png)](http:\/\/www.pinterest.com\/uspsstamps\/)\n- [![Image of Threads social media icon.](https:\/\/www.usps.com\/global-elements\/footer\/images\/threads_logo.png)](https:\/\/www.threads.net\/@uspostalservice?hl=en)\n- [![Image of X social media icon.](https:\/\/www.usps.com\/global-elements\/footer\/images\/x_logo.png)](https:\/\/twitter.com\/usps)\n- [![Image of Youtube social media icon.](https:\/\/www.usps.com\/global-elements\/footer\/images\/youtube_logo.png)](https:\/\/www.youtube.com\/usps)\n\nFeedback","attrs_readable_markdown":"![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https:\/\/www.usps.com\/assets\/images\/ship\/m-shipping-restrictions-hero.jpg)\n\nWhen you mail a letter or send a package, you must follow U.S. and USPS® guidelines. Learn what things you can and can't send in the U.S. mail:\n\n- Some items are prohibited (completely forbidden).\n- Some are restricted (allowed under certain conditions).\n- Hazardous materials (HAZMAT) might be prohibited or restricted.\n\nIf you're shipping internationally, see [International Shipping Prohibitions & Restrictions](https:\/\/www.usps.com\/international\/shipping-restrictions.htm).\n\n![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https:\/\/www.usps.com\/assets\/images\/ship\/shipping-restrictions-hero.jpg)\n\n**Reminder:** Mercury (a silver metal that's liquid at room temperature) is prohibited and can't be mailed, whether by itself or in devices like antique thermometers, barometers, and switches. However, items that contain small amounts of mercury vapor, like compact fluorescent lamps, can be mailed domestically. [Learn More](https:\/\/about.usps.com\/newsroom\/national-releases\/2024\/0621-mercury-remains-prohibited-in-the-mail.htm)\n\nAll USPS customers are responsible for:\n\n1. Reviewing [*USPS Publication 52, Hazardous, Restricted, & Perishable Mail*](https:\/\/pe.usps.com\/text\/pub52\/welcome.htm) to find out if your item is mailable.\n2. Complying with Postal Service™ regulations and U.S. laws and regulations.\n3. Packing your package securely and marking it as required. You can take your package to a Post Office™ location to make sure it is labeled correctly.\n\nHazardous materials are substances that could injure people or cause damage if not handled properly, like chemicals or flammable items.\n\nHAZMAT also includes [lithium batteries](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#lithium-batteries) (like the ones in cell phones and electronics; they contain a lot of energy and can be a fire risk) and [liquid mercury](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#mercury):\n\n- Some HAZMAT is prohibited—you can’t send it through USPS and must use another carrier.\n- Other HAZMAT is restricted—you can mail it if you follow all the rules.\n- Some HAZMAT can only be sent by ground transportation—it can’t go on airplanes.\n- If you are mailing packages that contain hazardous materials (HAZMAT), you must separate HAZMAT packages from all other packages and present them in a container marked \"HAZMAT.\"\n\nIf you knowingly mail materials that are dangerous or injurious to life, health, or property, for each violation, you face a civil penalty of at least \\$250 (but not more than \\$100,000), the costs of any cleanup, and damages. You may also face criminal penalties.\n\nYou can't send these items in the U.S. mail:\n\n- Air Bags\n- Ammunition\n- Explosives\n- Gasoline\n- Liquid Mercury\n- Marijuana (medical or otherwise); [hemp\/CBD is allowed, but restricted](https:\/\/www.usps.com\/ship\/shipping-restrictions.htm#hemp-cbd)\n\nExamples of mailable gases and aerosols include propane, butane, and fire extinguishers. Make sure you read about the specific rules and restrictions for sending mailable gases.\n\n[**List of Mailable Gases**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_021.htm)\n\nBeer, wine, and liquor may not be sent through the mail, except in limited circumstances.\n\nPlease note, if you want to reuse a box that has alcoholic beverage labels on it, remove all logos and labels so your package will pass through the mail system.\n\n[**Exceptions for Mailing Intoxicating Liquors**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_006.htm)\n\nCigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically. Customers are advised to review the Cigarettes, Cigars, and Tobacco [Definitions](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_025.htm) and [Mailability](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_026.htm).\n\n**Exceptions for Mailing Cigarette & Smokeless Tobacco**\n\nCigarettes and smokeless tobacco are mailable only in the below circumstances:\n\n- Intra-Alaskan and intra-Hawaiian shipments\n- Business\/regulatory purposes\n- Small-quantity “gift” shipments to individuals\n- Individual returns of an unacceptable tobacco product to a manufacturer\n\n**Other Shipping & Packaging Requirements**\n\nAllowable cigarette or smokeless tobacco shipments must be approved by a Postal employee at a Post Office™. The Postal employee will verify that an individual recipient is of legal age to receive the shipment.\n\n**Tobacco Shipments to APO\/FPO\/DPO**\n\nWhen shipping to APO\/FPO\/DPO locations in foreign countries, USPS treats the mail as domestic mail, but shipping is still subject to those foreign countries’ prohibitions and restrictions. Customers should be aware that size and weight standards may differ from USPS standards. See [International Country Listings](https:\/\/pe.usps.com\/text\/imm\/ab_toc.htm) to find country-specific prohibitions and restrictions.\n\nDry ice is permitted to be mailed when it is used as a refrigerant to cool the content of a mailable hazardous or nonhazardous material. Packages containing dry ice must be packed in containers that permit the release of carbon dioxide gas.\n\n[**Shipping Dry Ice Rules & Restrictions**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_028.htm#ep900106)\n\nOnly licensed manufacturers and dealers may mail or receive handguns. Even though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations.\n\n[**Additional Information on Mailing Firearms**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_009.htm)\n\nTo ship hand sanitizers, including wipes, you must use Parcel Select® service (only for businesses) or USPS Ground Advantage® service.\n\nMost hand sanitizers, including wipes, contain alcohol and are flammable in nature and are therefore handled and shipped as hazardous matter (HAZMAT) in the U.S. Mail. As flammable materials, these products are limited to surface transportation-only in domestic mail. It is prohibited to send these materials by International Mail including APO\/FPO\/DPO (military) destinations.\n\nIf you are unsure whether or not the product that you are shipping is flammable, please check with the manufacturer of the product before mailing.\n\n**Additional Resources**  \n[**Publication 52-Hazardous, Restricted and Perishable Mail Packaging Instructions 3A**](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_010.htm)\n\nA cannabis-derived substance with tetrahydrocannabinol (THC) content of 0.3 percent or less is legally hemp. Cannabidiol (CBD) is a compound found in the flower resin of cannabis plants.\n\nYou can send certain hemp-based products domestically (within the U.S. and to U.S. territories) if you comply with all applicable laws. (You cannot send hemp and hemp-derived products to international or military destinations.)\n\nTo mail legal hemp and hemp-based products, including CBD, you must:\n\n- Follow the guidelines outlined under [Publication 52, Section 453](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_019.htm)\n- Comply with all applicable federal, state, and local laws pertaining to hemp production, processing, distribution, and sales\n- Retain records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing\n\nFor domestic mailings only, small consumer-type primary lithium cells or batteries (lithium metal or lithium alloy) like those used to power cameras and flashlights are mailable domestically under certain conditions.\n\n**Lithium Batteries in Electronic Devices**\n\nIf you're mailing pre-owned, damaged, or defective electronic devices containing or packaged with lithium batteries, you must send them via ground transportation; they are prohibited in air transportation.\n\nThese devices must be marked on the outer packaging with the text, \"**Restricted Electronic Device**\" and \"**Surface Transportation Only**.\"\n\n[**Shipping Lithium Batteries**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_028.htm)\n\nExcept in limited circumstances, pets and warm-blooded animals may not go in the mail. Shipments of live animals, including poultry, reptiles, and bees, have very specific packaging requirements. Although you can drop these animals at any Post Office™ location, they are only shipped when the appropriate transportation is available. You'll also need to pay an [extra handling fee](https:\/\/www.usps.com\/ship\/mail-shipping-services.htm#perishables) that varies based on the shipping service you use.\n\n[**Regulations on Shipping Live Animals**](https:\/\/pe.usps.com\/text\/pub52\/pub52c5_008.htm)\n\n**Safety Matches**\n\nSafety matches have treated match heads that will only ignite when struck against a specially prepared surface like a match book, card, or box. Safety matches must be sent via ground transportation and cannot be mailed internationally.\n\n[**Additional Information on Mailing Safety Matches**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_023.htm#ep899150)\n\n**Strike-Anywhere Matches**\n\nStrike-anywhere matches will light from friction against any surface. Strike-anywhere matches may not be mailed domestically.\n\nWhen sending medicine or drugs through the mail, mailers and shippers must know the characteristics of the items they are sending and treat them correctly. Medicines are controlled substances and are subject to strict regulations. Prescription medications may only be mailed by Drug Enforcement Administration (DEA) registered distributors. Similar regulations apply to some over-the-counter medications.\n\n[**Shipping Controlled Substances & Drugs**](https:\/\/pe.usps.com\/text\/pub52\/pub52c4_019.htm)\n\nMercury is a toxic metal that’s a shiny, silver liquid at room temperature. It's often found in antique devices like thermometers, barometers, thermostats, and switches.\n\n**Liquid Mercury**\n\nLiquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier.\n\n**Mercury Vapor Devices**\n\nSome consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable. See [Pub 52, Section 348.22g](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_027.htm#ep1028018) and [Packaging Instruction 8C](https:\/\/pe.usps.com\/text\/pub52\/pub52apxc_028.htm#ep1000760) for more details.\n\nFlammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface only), and is sent within the quantity limitations and packaging requirements. Latex Paint or a similar water-based paint product that is not flammable or combustible is not regulated as a hazardous material, and therefore, is not restricted.\n\n[**Additional Information on Mailing Paint**](https:\/\/pe.usps.com\/text\/pub52\/pub52c3_022.htm#ep899076)\n\nPerishable items are materials that can deteriorate in the mail, such as live animals, food, and plants. Permissible perishable items are sent at the mailer’s own risk. These items must be specially packaged and mailed so that they arrive before they begin to deteriorate. You’ll also need to pay an [extra handling fee](https:\/\/www.usps.com\/ship\/mail-shipping-services.htm#perishables) that varies based on the shipping service you use.\n\n[**Shipping Perishable Materials Guidelines**](https:\/\/pe.usps.com\/text\/pub52\/pub52c5_001.htm)","meta_canonical":null}

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URL	https://www.usps.com/ship/shipping-restrictions.htm
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First Indexed	2014-11-17 18:37:20 (11 years ago)
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Meta Title	Shipping Restrictions & HAZMAT - What Can You Send in the Mail? \| USPS
Meta Description	Learn about USPS guidelines on hazardous materials (HAZMAT) or dangerous goods, what it means if an item is restricted or prohibited, and if you may ship food, batteries, alcohol, hand sanitizer, liquids, marijuana, or tobacco through the mail.
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Boilerpipe Text	When you mail a letter or send a package, you must follow U.S. and USPS ® guidelines. Learn what things you can and can't send in the U.S. mail: Some items are prohibited (completely forbidden). Some are restricted (allowed under certain conditions). Hazardous materials (HAZMAT) might be prohibited or restricted. If you're shipping internationally, see International Shipping Prohibitions & Restrictions . Reminder: Mercury (a silver metal that's liquid at room temperature) is prohibited and can't be mailed, whether by itself or in devices like antique thermometers, barometers, and switches. However, items that contain small amounts of mercury vapor, like compact fluorescent lamps, can be mailed domestically. Learn More All USPS customers are responsible for: Reviewing USPS Publication 52, Hazardous, Restricted, & Perishable Mail to find out if your item is mailable. Complying with Postal Service ™ regulations and U.S. laws and regulations. Packing your package securely and marking it as required. You can take your package to a Post Office ™ location to make sure it is labeled correctly. Hazardous materials are substances that could injure people or cause damage if not handled properly, like chemicals or flammable items. HAZMAT also includes lithium batteries (like the ones in cell phones and electronics; they contain a lot of energy and can be a fire risk) and liquid mercury : Some HAZMAT is prohibited—you can’t send it through USPS and must use another carrier. Other HAZMAT is restricted—you can mail it if you follow all the rules. Some HAZMAT can only be sent by ground transportation—it can’t go on airplanes. If you are mailing packages that contain hazardous materials (HAZMAT), you must separate HAZMAT packages from all other packages and present them in a container marked "HAZMAT." If you knowingly mail materials that are dangerous or injurious to life, health, or property, for each violation, you face a civil penalty of at least $250 (but not more than $100,000), the costs of any cleanup, and damages. You may also face criminal penalties. You can't send these items in the U.S. mail: Air Bags Ammunition Explosives Gasoline Liquid Mercury Marijuana (medical or otherwise); hemp/CBD is allowed, but restricted Examples of mailable gases and aerosols include propane, butane, and fire extinguishers. Make sure you read about the specific rules and restrictions for sending mailable gases. List of Mailable Gases Beer, wine, and liquor may not be sent through the mail, except in limited circumstances. Please note, if you want to reuse a box that has alcoholic beverage labels on it, remove all logos and labels so your package will pass through the mail system. Exceptions for Mailing Intoxicating Liquors Cigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically. Customers are advised to review the Cigarettes, Cigars, and Tobacco Definitions and Mailability . Exceptions for Mailing Cigarette & Smokeless Tobacco Cigarettes and smokeless tobacco are mailable only in the below circumstances: Intra-Alaskan and intra-Hawaiian shipments Business/regulatory purposes Small-quantity “gift” shipments to individuals Individual returns of an unacceptable tobacco product to a manufacturer Other Shipping & Packaging Requirements Allowable cigarette or smokeless tobacco shipments must be approved by a Postal employee at a Post Office ™ . The Postal employee will verify that an individual recipient is of legal age to receive the shipment. Tobacco Shipments to APO/FPO/DPO When shipping to APO/FPO/DPO locations in foreign countries, USPS treats the mail as domestic mail, but shipping is still subject to those foreign countries’ prohibitions and restrictions. Customers should be aware that size and weight standards may differ from USPS standards. See International Country Listings to find country-specific prohibitions and restrictions. Dry ice is permitted to be mailed when it is used as a refrigerant to cool the content of a mailable hazardous or nonhazardous material. Packages containing dry ice must be packed in containers that permit the release of carbon dioxide gas. Shipping Dry Ice Rules & Restrictions Only licensed manufacturers and dealers may mail or receive handguns. Even though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations. Additional Information on Mailing Firearms To ship hand sanitizers, including wipes, you must use Parcel Select ® service (only for businesses) or USPS Ground Advantage ® service. Most hand sanitizers, including wipes, contain alcohol and are flammable in nature and are therefore handled and shipped as hazardous matter (HAZMAT) in the U.S. Mail. As flammable materials, these products are limited to surface transportation-only in domestic mail. It is prohibited to send these materials by International Mail including APO/FPO/DPO (military) destinations. If you are unsure whether or not the product that you are shipping is flammable, please check with the manufacturer of the product before mailing. Additional Resources Publication 52-Hazardous, Restricted and Perishable Mail Packaging Instructions 3A A cannabis-derived substance with tetrahydrocannabinol (THC) content of 0.3 percent or less is legally hemp. Cannabidiol (CBD) is a compound found in the flower resin of cannabis plants. You can send certain hemp-based products domestically (within the U.S. and to U.S. territories) if you comply with all applicable laws. (You cannot send hemp and hemp-derived products to international or military destinations.) To mail legal hemp and hemp-based products, including CBD, you must: Follow the guidelines outlined under Publication 52, Section 453 Comply with all applicable federal, state, and local laws pertaining to hemp production, processing, distribution, and sales Retain records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing For domestic mailings only, small consumer-type primary lithium cells or batteries (lithium metal or lithium alloy) like those used to power cameras and flashlights are mailable domestically under certain conditions. Lithium Batteries in Electronic Devices If you're mailing pre-owned, damaged, or defective electronic devices containing or packaged with lithium batteries, you must send them via ground transportation; they are prohibited in air transportation. These devices must be marked on the outer packaging with the text, " Restricted Electronic Device " and " Surface Transportation Only ." Shipping Lithium Batteries Except in limited circumstances, pets and warm-blooded animals may not go in the mail. Shipments of live animals, including poultry, reptiles, and bees, have very specific packaging requirements. Although you can drop these animals at any Post Office ™ location, they are only shipped when the appropriate transportation is available. You'll also need to pay an extra handling fee that varies based on the shipping service you use. Regulations on Shipping Live Animals Safety Matches Safety matches have treated match heads that will only ignite when struck against a specially prepared surface like a match book, card, or box. Safety matches must be sent via ground transportation and cannot be mailed internationally. Additional Information on Mailing Safety Matches Strike-Anywhere Matches Strike-anywhere matches will light from friction against any surface. Strike-anywhere matches may not be mailed domestically. When sending medicine or drugs through the mail, mailers and shippers must know the characteristics of the items they are sending and treat them correctly. Medicines are controlled substances and are subject to strict regulations. Prescription medications may only be mailed by Drug Enforcement Administration (DEA) registered distributors. Similar regulations apply to some over-the-counter medications. Shipping Controlled Substances & Drugs Mercury is a toxic metal that’s a shiny, silver liquid at room temperature. It's often found in antique devices like thermometers, barometers, thermostats, and switches. Liquid Mercury Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier. Mercury Vapor Devices Some consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable. See Pub 52, Section 348.22g and Packaging Instruction 8C for more details. Flammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface only), and is sent within the quantity limitations and packaging requirements. Latex Paint or a similar water-based paint product that is not flammable or combustible is not regulated as a hazardous material, and therefore, is not restricted. Additional Information on Mailing Paint Perishable items are materials that can deteriorate in the mail, such as live animals, food, and plants. Permissible perishable items are sent at the mailer’s own risk. These items must be specially packaged and mailed so that they arrive before they begin to deteriorate. You’ll also need to pay an extra handling fee that varies based on the shipping service you use. Shipping Perishable Materials Guidelines
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[Requesting a Refund](https://www.usps.com/help/refunds.htm) - [Skip Search](https://www.usps.com/ship/shipping-restrictions.htm#endnav) [Search USPS.com](https://www.usps.com/ship/shipping-restrictions.htm) Search USPS.com Top Searches - [PO BOXES](https://www.usps.com/search/results.htm?PNO=1&keyword=PO%20Boxes) - [PASSPORTS](https://www.usps.com/search/results.htm?PNO=1&keyword=Passports) - [FREE BOXES](https://www.usps.com/search/results.htm?PNO=1&keyword=Free%20Boxes) Top Searches - [PO BOXES](https://www.usps.com/search/results.htm?PNO=1&keyword=PO%20Boxes) - [PASSPORTS](https://www.usps.com/search/results.htm?PNO=1&keyword=Passports) - [FREE BOXES](https://www.usps.com/search/results.htm?PNO=1&keyword=Free%20Boxes) ![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https://www.usps.com/assets/images/ship/m-shipping-restrictions-hero.jpg) # Domestic Shipping Prohibitions, Restrictions, & HAZMAT When you mail a letter or send a package, you must follow U.S. and USPS® guidelines. Learn what things you can and can't send in the U.S. mail: - Some items are prohibited (completely forbidden). - Some are restricted (allowed under certain conditions). - Hazardous materials (HAZMAT) might be prohibited or restricted. If you're shipping internationally, see [International Shipping Prohibitions & Restrictions](https://www.usps.com/international/shipping-restrictions.htm). ![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https://www.usps.com/assets/images/ship/shipping-restrictions-hero.jpg) Reminder: Mercury (a silver metal that's liquid at room temperature) is prohibited and can't be mailed, whether by itself or in devices like antique thermometers, barometers, and switches. However, items that contain small amounts of mercury vapor, like compact fluorescent lamps, can be mailed domestically. [Learn More](https://about.usps.com/newsroom/national-releases/2024/0621-mercury-remains-prohibited-in-the-mail.htm) ## Mailer Guidelines All USPS customers are responsible for: 1. Reviewing [USPS Publication 52, Hazardous, Restricted, & Perishable Mail](https://pe.usps.com/text/pub52/welcome.htm) to find out if your item is mailable. 2. Complying with Postal Service™ regulations and U.S. laws and regulations. 3. Packing your package securely and marking it as required. You can take your package to a Post Office™ location to make sure it is labeled correctly. ## Shipping Hazardous Materials (HAZMAT) Hazardous materials are substances that could injure people or cause damage if not handled properly, like chemicals or flammable items. HAZMAT also includes [lithium batteries](https://www.usps.com/ship/shipping-restrictions.htm#lithium-batteries) (like the ones in cell phones and electronics; they contain a lot of energy and can be a fire risk) and [liquid mercury](https://www.usps.com/ship/shipping-restrictions.htm#mercury): - Some HAZMAT is prohibited—you can’t send it through USPS and must use another carrier. - Other HAZMAT is restricted—you can mail it if you follow all the rules. - Some HAZMAT can only be sent by ground transportation—it can’t go on airplanes. - If you are mailing packages that contain hazardous materials (HAZMAT), you must separate HAZMAT packages from all other packages and present them in a container marked "HAZMAT." If you knowingly mail materials that are dangerous or injurious to life, health, or property, for each violation, you face a civil penalty of at least \$250 (but not more than \$100,000), the costs of any cleanup, and damages. You may also face criminal penalties. ## Domestically Prohibited Items You can't send these items in the U.S. mail: - Air Bags - Ammunition - Explosives - Gasoline - Liquid Mercury - Marijuana (medical or otherwise); [hemp/CBD is allowed, but restricted](https://www.usps.com/ship/shipping-restrictions.htm#hemp-cbd) ## Domestically Restricted Items You can send the following items if you follow all the rules and restrictions. See a more complete list in [USPS Publication 52, Hazardous, Restricted, & Perishable Mail](https://pe.usps.com/text/pub52/index.htm). [Expand Allor close all content topics for immediately following heading](https://www.usps.com/ship/shipping-restrictions.htm) #### [Open or Close content below Aerosols](https://www.usps.com/ship/shipping-restrictions.htm) Examples of mailable gases and aerosols include propane, butane, and fire extinguishers. Make sure you read about the specific rules and restrictions for sending mailable gases. [List of Mailable Gases](https://pe.usps.com/text/pub52/pub52c3_021.htm) #### [Open or Close content below Alcoholic Beverages](https://www.usps.com/ship/shipping-restrictions.htm) Beer, wine, and liquor may not be sent through the mail, except in limited circumstances. Please note, if you want to reuse a box that has alcoholic beverage labels on it, remove all logos and labels so your package will pass through the mail system. [Exceptions for Mailing Intoxicating Liquors](https://pe.usps.com/text/pub52/pub52c4_006.htm) #### [Open or Close content below Cigarettes, Cigars, & Tobacco](https://www.usps.com/ship/shipping-restrictions.htm) Cigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically. Customers are advised to review the Cigarettes, Cigars, and Tobacco [Definitions](https://pe.usps.com/text/pub52/pub52c4_025.htm) and [Mailability](https://pe.usps.com/text/pub52/pub52c4_026.htm). Exceptions for Mailing Cigarette & Smokeless Tobacco Cigarettes and smokeless tobacco are mailable only in the below circumstances: - Intra-Alaskan and intra-Hawaiian shipments - Business/regulatory purposes - Small-quantity “gift” shipments to individuals - Individual returns of an unacceptable tobacco product to a manufacturer Other Shipping & Packaging Requirements Allowable cigarette or smokeless tobacco shipments must be approved by a Postal employee at a Post Office™. The Postal employee will verify that an individual recipient is of legal age to receive the shipment. Tobacco Shipments to APO/FPO/DPO When shipping to APO/FPO/DPO locations in foreign countries, USPS treats the mail as domestic mail, but shipping is still subject to those foreign countries’ prohibitions and restrictions. Customers should be aware that size and weight standards may differ from USPS standards. See [International Country Listings](https://pe.usps.com/text/imm/ab_toc.htm) to find country-specific prohibitions and restrictions. #### [Open or Close content below Cremated Remains](https://www.usps.com/ship/shipping-restrictions.htm) USPS® is the only shipping company that ships cremated remains (human or pet ashes). You may ship cremated remains domestically but must use Priority Mail Express®. Make sure the inner primary container is strong, durable, and properly sealed. For the outer shipping package, you must use one of our Priority Mail Express® Cremated Remains Kits . Order free cremated remains shipping supplies on [The Postal Store®](https://store.usps.com/store/results?Ntt=cremated&_requestid=171234). [Watch How to Ship Cremated Remains Safely Video](https://about.usps.com/newsroom/cremated-remains.htm) [Publication 139 - How to Package & Ship Cremated Remains](https://about.usps.com/publications/pub139.pdf) [Other Guidelines on Shipping & Packaging Cremated Remains](https://pe.usps.com/text/pub52/pub52c4_017.htm?q=cremated&t=H&s=R&p=1&c=Pub52) #### [Open or Close content below Dry Ice](https://www.usps.com/ship/shipping-restrictions.htm) Dry ice is permitted to be mailed when it is used as a refrigerant to cool the content of a mailable hazardous or nonhazardous material. Packages containing dry ice must be packed in containers that permit the release of carbon dioxide gas. [Shipping Dry Ice Rules & Restrictions](https://pe.usps.com/text/pub52/pub52c3_028.htm#ep900106) #### [Open or Close content below Firearms](https://www.usps.com/ship/shipping-restrictions.htm) Only licensed manufacturers and dealers may mail or receive handguns. Even though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations. [Additional Information on Mailing Firearms](https://pe.usps.com/text/pub52/pub52c4_009.htm) #### [Open or Close content below Glues](https://www.usps.com/ship/shipping-restrictions.htm) Glues have a wide range of flashpoints. You are responsible for knowing the flashpoint and toxicity of the glue you want to mail. Flammable glues may be mailed if they are a consumer commodity. Some glues may only be sent by ground transportation. Glues are categorized as “adhesives” in the below resources. [Shipping Flammable & Combustible Liquids](https://pe.usps.com/text/pub52/pub52c3_022.htm) [Packaging Instructions for Combustible Liquids](https://pe.usps.com/text/pub52/pub52apxc_011.htm) #### [Open or Close content below Hand Sanitizer](https://www.usps.com/ship/shipping-restrictions.htm) To ship hand sanitizers, including wipes, you must use Parcel Select® service (only for businesses) or USPS Ground Advantage® service. Most hand sanitizers, including wipes, contain alcohol and are flammable in nature and are therefore handled and shipped as hazardous matter (HAZMAT) in the U.S. Mail. As flammable materials, these products are limited to surface transportation-only in domestic mail. It is prohibited to send these materials by International Mail including APO/FPO/DPO (military) destinations. If you are unsure whether or not the product that you are shipping is flammable, please check with the manufacturer of the product before mailing. Additional Resources [Publication 52-Hazardous, Restricted and Perishable Mail Packaging Instructions 3A](https://pe.usps.com/text/pub52/pub52apxc_010.htm) #### [Open or Close content below Hemp Products (including CBD)](https://www.usps.com/ship/shipping-restrictions.htm) A cannabis-derived substance with tetrahydrocannabinol (THC) content of 0.3 percent or less is legally hemp. Cannabidiol (CBD) is a compound found in the flower resin of cannabis plants. You can send certain hemp-based products domestically (within the U.S. and to U.S. territories) if you comply with all applicable laws. (You cannot send hemp and hemp-derived products to international or military destinations.) To mail legal hemp and hemp-based products, including CBD, you must: - Follow the guidelines outlined under [Publication 52, Section 453](https://pe.usps.com/text/pub52/pub52c4_019.htm) - Comply with all applicable federal, state, and local laws pertaining to hemp production, processing, distribution, and sales - Retain records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing #### [Open or Close content below Lithium Batteries](https://www.usps.com/ship/shipping-restrictions.htm) For domestic mailings only, small consumer-type primary lithium cells or batteries (lithium metal or lithium alloy) like those used to power cameras and flashlights are mailable domestically under certain conditions. Lithium Batteries in Electronic Devices If you're mailing pre-owned, damaged, or defective electronic devices containing or packaged with lithium batteries, you must send them via ground transportation; they are prohibited in air transportation. These devices must be marked on the outer packaging with the text, "Restricted Electronic Device" and "Surface Transportation Only." [Shipping Lithium Batteries](https://pe.usps.com/text/pub52/pub52c3_028.htm) #### [Open or Close content below Live Animals](https://www.usps.com/ship/shipping-restrictions.htm) Except in limited circumstances, pets and warm-blooded animals may not go in the mail. Shipments of live animals, including poultry, reptiles, and bees, have very specific packaging requirements. Although you can drop these animals at any Post Office™ location, they are only shipped when the appropriate transportation is available. You'll also need to pay an [extra handling fee](https://www.usps.com/ship/mail-shipping-services.htm#perishables) that varies based on the shipping service you use. [Regulations on Shipping Live Animals](https://pe.usps.com/text/pub52/pub52c5_008.htm) #### [Open or Close content below Matches](https://www.usps.com/ship/shipping-restrictions.htm) Safety Matches Safety matches have treated match heads that will only ignite when struck against a specially prepared surface like a match book, card, or box. Safety matches must be sent via ground transportation and cannot be mailed internationally. [Additional Information on Mailing Safety Matches](https://pe.usps.com/text/pub52/pub52c3_023.htm#ep899150) Strike-Anywhere Matches Strike-anywhere matches will light from friction against any surface. Strike-anywhere matches may not be mailed domestically. #### [Open or Close content below Medicines & Prescription Drugs](https://www.usps.com/ship/shipping-restrictions.htm) When sending medicine or drugs through the mail, mailers and shippers must know the characteristics of the items they are sending and treat them correctly. Medicines are controlled substances and are subject to strict regulations. Prescription medications may only be mailed by Drug Enforcement Administration (DEA) registered distributors. Similar regulations apply to some over-the-counter medications. [Shipping Controlled Substances & Drugs](https://pe.usps.com/text/pub52/pub52c4_019.htm) #### [Open or Close content below Mercury](https://www.usps.com/ship/shipping-restrictions.htm) Mercury is a toxic metal that’s a shiny, silver liquid at room temperature. It's often found in antique devices like thermometers, barometers, thermostats, and switches. Liquid Mercury Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier. Mercury Vapor Devices Some consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable. See [Pub 52, Section 348.22g](https://pe.usps.com/text/pub52/pub52c3_027.htm#ep1028018) and [Packaging Instruction 8C](https://pe.usps.com/text/pub52/pub52apxc_028.htm#ep1000760) for more details. #### [Open or Close content below Nail Polish](https://www.usps.com/ship/shipping-restrictions.htm) If the nail polish you want to mail is flammable, you are responsible for knowing its flashpoint and toxicity. Flammable nail polishes may be mailed domestically if they are a consumer commodity. Some nail polishes may only be sent by ground transportation. [Shipping Flammable & Combustible Liquids](https://pe.usps.com/text/pub52/pub52c3_022.htm) [Packaging Instructions for Combustible Liquids](https://pe.usps.com/text/pub52/pub52apxc_011.htm) #### [Open or Close content below Paint](https://www.usps.com/ship/shipping-restrictions.htm) Flammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface only), and is sent within the quantity limitations and packaging requirements. Latex Paint or a similar water-based paint product that is not flammable or combustible is not regulated as a hazardous material, and therefore, is not restricted. [Additional Information on Mailing Paint](https://pe.usps.com/text/pub52/pub52c3_022.htm#ep899076) #### [Open or Close content below Perfumes](https://www.usps.com/ship/shipping-restrictions.htm) Perfume containing alcohol may not be shipped internationally or mailed domestically using air transportation. Perfume containing alcohol, however, may be shipped within the United States by ground transportation. [Shipping Flammable & Combustible Liquids](https://pe.usps.com/text/pub52/pub52c3_022.htm) [Packaging Instructions for Combustible Liquids](https://pe.usps.com/text/pub52/pub52apxc_011.htm) #### [Open or Close content below Perishable Items](https://www.usps.com/ship/shipping-restrictions.htm) Perishable items are materials that can deteriorate in the mail, such as live animals, food, and plants. Permissible perishable items are sent at the mailer’s own risk. These items must be specially packaged and mailed so that they arrive before they begin to deteriorate. You’ll also need to pay an [extra handling fee](https://www.usps.com/ship/mail-shipping-services.htm#perishables) that varies based on the shipping service you use. [Shipping Perishable Materials Guidelines](https://pe.usps.com/text/pub52/pub52c5_001.htm) #### [Open or Close content below Poisons](https://www.usps.com/ship/shipping-restrictions.htm) Poisons are considered toxins. You are responsible for knowing the toxicity of the material you want to mail. Some poisons may be sent by air and ground transport, others only by ground. [Mailable Class 6 Materials](https://pe.usps.com/text/pub52/pub52c3_025.htm) [Packaging Instructions for Toxic Substances](https://pe.usps.com/text/pub52/pub52apxc_017.htm#ep1000127) 1. Helpful Links 1. [Contact Us](https://www.usps.com/help/contact-us.htm) 2. [Site Index](https://www.usps.com/globals/site-index.htm) 3. [FAQs](https://faq.usps.com/s/) 4. [Feedback](https://www.usps.com/ship/shipping-restrictions.htm) 5. USPS Jobs 1. 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Readable Markdown	![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https://www.usps.com/assets/images/ship/m-shipping-restrictions-hero.jpg) When you mail a letter or send a package, you must follow U.S. and USPS® guidelines. Learn what things you can and can't send in the U.S. mail: - Some items are prohibited (completely forbidden). - Some are restricted (allowed under certain conditions). - Hazardous materials (HAZMAT) might be prohibited or restricted. If you're shipping internationally, see [International Shipping Prohibitions & Restrictions](https://www.usps.com/international/shipping-restrictions.htm). ![Brown boxes marked with symbols for ammunition, mercury, and radioactive and flammable items, next to a red circle with a slash through it.](https://www.usps.com/assets/images/ship/shipping-restrictions-hero.jpg) Reminder: Mercury (a silver metal that's liquid at room temperature) is prohibited and can't be mailed, whether by itself or in devices like antique thermometers, barometers, and switches. However, items that contain small amounts of mercury vapor, like compact fluorescent lamps, can be mailed domestically. [Learn More](https://about.usps.com/newsroom/national-releases/2024/0621-mercury-remains-prohibited-in-the-mail.htm) All USPS customers are responsible for: 1. Reviewing [USPS Publication 52, Hazardous, Restricted, & Perishable Mail](https://pe.usps.com/text/pub52/welcome.htm) to find out if your item is mailable. 2. Complying with Postal Service™ regulations and U.S. laws and regulations. 3. Packing your package securely and marking it as required. You can take your package to a Post Office™ location to make sure it is labeled correctly. Hazardous materials are substances that could injure people or cause damage if not handled properly, like chemicals or flammable items. HAZMAT also includes [lithium batteries](https://www.usps.com/ship/shipping-restrictions.htm#lithium-batteries) (like the ones in cell phones and electronics; they contain a lot of energy and can be a fire risk) and [liquid mercury](https://www.usps.com/ship/shipping-restrictions.htm#mercury): - Some HAZMAT is prohibited—you can’t send it through USPS and must use another carrier. - Other HAZMAT is restricted—you can mail it if you follow all the rules. - Some HAZMAT can only be sent by ground transportation—it can’t go on airplanes. - If you are mailing packages that contain hazardous materials (HAZMAT), you must separate HAZMAT packages from all other packages and present them in a container marked "HAZMAT." If you knowingly mail materials that are dangerous or injurious to life, health, or property, for each violation, you face a civil penalty of at least \$250 (but not more than \$100,000), the costs of any cleanup, and damages. You may also face criminal penalties. You can't send these items in the U.S. mail: - Air Bags - Ammunition - Explosives - Gasoline - Liquid Mercury - Marijuana (medical or otherwise); [hemp/CBD is allowed, but restricted](https://www.usps.com/ship/shipping-restrictions.htm#hemp-cbd) Examples of mailable gases and aerosols include propane, butane, and fire extinguishers. Make sure you read about the specific rules and restrictions for sending mailable gases. [List of Mailable Gases](https://pe.usps.com/text/pub52/pub52c3_021.htm) Beer, wine, and liquor may not be sent through the mail, except in limited circumstances. Please note, if you want to reuse a box that has alcoholic beverage labels on it, remove all logos and labels so your package will pass through the mail system. [Exceptions for Mailing Intoxicating Liquors](https://pe.usps.com/text/pub52/pub52c4_006.htm) Cigarettes and smokeless tobacco are restricted items and can only be mailed in limited circumstances. Cigars may be mailed domestically. Customers are advised to review the Cigarettes, Cigars, and Tobacco [Definitions](https://pe.usps.com/text/pub52/pub52c4_025.htm) and [Mailability](https://pe.usps.com/text/pub52/pub52c4_026.htm). Exceptions for Mailing Cigarette & Smokeless Tobacco Cigarettes and smokeless tobacco are mailable only in the below circumstances: - Intra-Alaskan and intra-Hawaiian shipments - Business/regulatory purposes - Small-quantity “gift” shipments to individuals - Individual returns of an unacceptable tobacco product to a manufacturer Other Shipping & Packaging Requirements Allowable cigarette or smokeless tobacco shipments must be approved by a Postal employee at a Post Office™. The Postal employee will verify that an individual recipient is of legal age to receive the shipment. Tobacco Shipments to APO/FPO/DPO When shipping to APO/FPO/DPO locations in foreign countries, USPS treats the mail as domestic mail, but shipping is still subject to those foreign countries’ prohibitions and restrictions. Customers should be aware that size and weight standards may differ from USPS standards. See [International Country Listings](https://pe.usps.com/text/imm/ab_toc.htm) to find country-specific prohibitions and restrictions. Dry ice is permitted to be mailed when it is used as a refrigerant to cool the content of a mailable hazardous or nonhazardous material. Packages containing dry ice must be packed in containers that permit the release of carbon dioxide gas. [Shipping Dry Ice Rules & Restrictions](https://pe.usps.com/text/pub52/pub52c3_028.htm#ep900106) Only licensed manufacturers and dealers may mail or receive handguns. Even though unloaded rifles and shotguns are mailable, mailers must comply with applicable regulations. [Additional Information on Mailing Firearms](https://pe.usps.com/text/pub52/pub52c4_009.htm) To ship hand sanitizers, including wipes, you must use Parcel Select® service (only for businesses) or USPS Ground Advantage® service. Most hand sanitizers, including wipes, contain alcohol and are flammable in nature and are therefore handled and shipped as hazardous matter (HAZMAT) in the U.S. Mail. As flammable materials, these products are limited to surface transportation-only in domestic mail. It is prohibited to send these materials by International Mail including APO/FPO/DPO (military) destinations. If you are unsure whether or not the product that you are shipping is flammable, please check with the manufacturer of the product before mailing. Additional Resources [Publication 52-Hazardous, Restricted and Perishable Mail Packaging Instructions 3A](https://pe.usps.com/text/pub52/pub52apxc_010.htm) A cannabis-derived substance with tetrahydrocannabinol (THC) content of 0.3 percent or less is legally hemp. Cannabidiol (CBD) is a compound found in the flower resin of cannabis plants. You can send certain hemp-based products domestically (within the U.S. and to U.S. territories) if you comply with all applicable laws. (You cannot send hemp and hemp-derived products to international or military destinations.) To mail legal hemp and hemp-based products, including CBD, you must: - Follow the guidelines outlined under [Publication 52, Section 453](https://pe.usps.com/text/pub52/pub52c4_019.htm) - Comply with all applicable federal, state, and local laws pertaining to hemp production, processing, distribution, and sales - Retain records establishing compliance with such laws, including laboratory test results, licenses, or compliance reports, for no less than 2 years after the date of mailing For domestic mailings only, small consumer-type primary lithium cells or batteries (lithium metal or lithium alloy) like those used to power cameras and flashlights are mailable domestically under certain conditions. Lithium Batteries in Electronic Devices If you're mailing pre-owned, damaged, or defective electronic devices containing or packaged with lithium batteries, you must send them via ground transportation; they are prohibited in air transportation. These devices must be marked on the outer packaging with the text, "Restricted Electronic Device" and "Surface Transportation Only." [Shipping Lithium Batteries](https://pe.usps.com/text/pub52/pub52c3_028.htm) Except in limited circumstances, pets and warm-blooded animals may not go in the mail. Shipments of live animals, including poultry, reptiles, and bees, have very specific packaging requirements. Although you can drop these animals at any Post Office™ location, they are only shipped when the appropriate transportation is available. You'll also need to pay an [extra handling fee](https://www.usps.com/ship/mail-shipping-services.htm#perishables) that varies based on the shipping service you use. [Regulations on Shipping Live Animals](https://pe.usps.com/text/pub52/pub52c5_008.htm) Safety Matches Safety matches have treated match heads that will only ignite when struck against a specially prepared surface like a match book, card, or box. Safety matches must be sent via ground transportation and cannot be mailed internationally. [Additional Information on Mailing Safety Matches](https://pe.usps.com/text/pub52/pub52c3_023.htm#ep899150) Strike-Anywhere Matches Strike-anywhere matches will light from friction against any surface. Strike-anywhere matches may not be mailed domestically. When sending medicine or drugs through the mail, mailers and shippers must know the characteristics of the items they are sending and treat them correctly. Medicines are controlled substances and are subject to strict regulations. Prescription medications may only be mailed by Drug Enforcement Administration (DEA) registered distributors. Similar regulations apply to some over-the-counter medications. [Shipping Controlled Substances & Drugs](https://pe.usps.com/text/pub52/pub52c4_019.htm) Mercury is a toxic metal that’s a shiny, silver liquid at room temperature. It's often found in antique devices like thermometers, barometers, thermostats, and switches. Liquid Mercury Liquid mercury in any amount (and devices containing a visible amount of mercury) is prohibited from the US Mail, so you must find another carrier. Mercury Vapor Devices Some consumer devices, like compact fluorescent light bulbs, contain tiny amounts of mercury vapor. These items are restricted, but mailable. See [Pub 52, Section 348.22g](https://pe.usps.com/text/pub52/pub52c3_027.htm#ep1028018) and [Packaging Instruction 8C](https://pe.usps.com/text/pub52/pub52apxc_028.htm#ep1000760) for more details. Flammable or combustible paint and paint-related items are generally accepted for mailing, provided the material can qualify as a consumer commodity material or ORM-D (for surface only), and is sent within the quantity limitations and packaging requirements. Latex Paint or a similar water-based paint product that is not flammable or combustible is not regulated as a hazardous material, and therefore, is not restricted. [Additional Information on Mailing Paint](https://pe.usps.com/text/pub52/pub52c3_022.htm#ep899076) Perishable items are materials that can deteriorate in the mail, such as live animals, food, and plants. Permissible perishable items are sent at the mailer’s own risk. These items must be specially packaged and mailed so that they arrive before they begin to deteriorate. You’ll also need to pay an [extra handling fee](https://www.usps.com/ship/mail-shipping-services.htm#perishables) that varies based on the shipping service you use. [Shipping Perishable Materials Guidelines](https://pe.usps.com/text/pub52/pub52c5_001.htm)
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