The shipment that arrived at the border for import was in violation of FIFRA section 12(a)(1)(A) (7 U.S.C. ? 136j(a)(1)(A)), which states that it is unlawful for any person to distribute or sell any pesticide that is not registered under section 3 of FIFRA (7 U.S.C. ? 136a). Under FIFRA, a pesticide is any substance (including antimicrobials) intended for a pesticidal purpose, i.e., use for the purpose of preventing, destroying, repelling, or mitigating any pest or use as a plant regulator, defoliant, or desiccant. (See 40 C.F.R. ? 152.15.)