https://www.usps.com/ship/shipping-restrictions.htm
Shipping Restrictions & HAZMAT - What Can You Send in the Mail? | USPS
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,...
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https://www.usps.com/international/shipping-restrictions.htm
International Shipping Restrictions - What You Can Mail Internationally | USPS
USPS international mailing guidelines explain what you may ship overseas by air and with APO, FPO, and DPO. You may not ship hand sanitizer or flammable...
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