Mailed packages
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) If you import a restricted organism through the mail or through commercial express delivery, you must attach a special mailing label (APHIS Form 599), which APHIS will provide with your permit, to the package or container. The mailing label indicates that APHIS has authorized the shipment.
(b) You must address the package containing the restricted organism to the containment facility or apiary identified on the permit (post office boxes are not allowed).
(c) If the restricted organism arrives in the mail without the mailing label described in paragraph (a) of this section or addressed to a containment facility or apiary other than the one listed on the permit, an inspector will refuse to allow the organism to enter the United States.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.