Restircted and Hazardous Materials
Materials or items that are considered restricted are often not mailable. This may include hazardous and perishable items. Many common household items cannot be mailed through the US Postal Service®. Certain materials or items are mailable, but with restrictions. Additional restrictions apply to items being mailed internationally.

Examples of resticted or hazardous household products that may be mailable but have specific restrictions...

Aerosols
Perfumes containing alcohol
Nail Polish
Lithium Batteries

Examples of non-mailable items...

Explosives
Ammunition
Alcoholic Beverages
Air bags
Gasoline

Need more information?
Browse Domestic Mail Manual (DMM®) 601.10: Hazardous Materials ›