Any animal waste product, processed or unprocessed, must have a label, tag, or invoice containing the following information:
(B) Special labeling or warning as appropriate.
(1) If the product contains drug residues, then the label shall contain the following statement in boldface type:
"Warning: This product contains drug residues. Do not use within fifteen days of slaughter and do not use fifteen days prior to or during the food production period of dairy animals and laying hens."
(2) If the product contains high levels (twenty five PPM or greater) of copper, a maximum guarantee of copper and the following statement is required:
"Warning: contains high levels of copper: Do not feed to sheep."
(3) If the product derives one-third or more of the guaranteed total crude protein from non-protein nitrogen sources, the label shall provide adequate directions for safe use of the product and the precautionary statement:
"Caution: Use only as directed."