7 C.F.R. § 319.75-5
(a) Any regulated article at the time of importation shall plainly and correctly bear on the outer container (if in a container) or on the regulated article (if not in a container) the following information:
(b) Any regulated article shall be accompanied at the time of importation by an invoice or packing list indicating the contents of the shipment.
(Approved by the Office of Management and Budget under control number 0579-0049)
[46 FR 38334, July 27, 1981, as amended at 47 FR 3085, Jan. 22, 1982; 48 FR 57466, Dec. 30, 1983; 79 FR 19811, Apr. 10, 2014]