I certify that my mailing complies with all applicable laws and U.S. Postal Service® regulation and does not contain any prohibited, improperly prepared, or undeclared hazardous materials, as per the requirement set forth in Publication 52, Hazardous, Restricted, and Perishable Mail, the Domestic Mail Manual, and the International Mail Manual (all available online at: https://pe.usps.com/).

The mailing of Mercury is PROHIBITED. Failure to comply with this, or any other, prohibition can result in civil penalties up to $100,000, plus the costs of clean-up and/or damages for each violation. Additionally, some hazardous materials, including but not limited to firearms ammunition, fireworks, strike anywhere matches, and certain flammable liquids (e.g., pure acetone) are prohibited in the mail. As the mailer, you are responsible to know the mailability of your product.

Lithium metal and lithium ion batteries being shipped independently are prohibited from air eligible shipping service (e.g, Priority Mail, Priority Mail Express, and First-Class Package service). Electronic products packed with or containing lithium batteries, such as cell phones, laptop, and e-cigarettes are subject to additional restrictions in both domestic and international mail.

Any mailing containing cigarettes or smokeless tobacco must be presented to a Postal Service^™ employee at a Retail Post Office^™ location for proper acceptance.