A system and method for maintaining animal ear tags are disclosed. Said system comprising an animal ear tag. Said animal ear tag comprises a body, a control chemical, one or more identifiers, and an ear attachment assembly. Said ear attachment assembly is capable of attaching to an ear of an animal. Said body and said ear attachment assembly are one-piece. Said method comprising attaching one or more identifiers to an animal ear tag having a body and an ear attachment assembly, and attaching said ear attachment assembly to an ear of an animal. Said body and said ear attachment assembly are one-piece. A portion of said animal ear tag comprises a control chemical capable of protecting said animal.
