Ultra Boss™ Pour-On Insecticide

Goes to work faster to kill biting flies and lice! Fast acting formulation contains 5% Piperonyl Butoxide (P.B.O.) and 5% Permethrin for optimum pest control of horn flies, face flies, and lice. Prevents blood loss, promotes optimum weight gain, and guards against reduced production and disease. Approved for all classes of beef cattle, dairy cattle, horses, goats, and sheep. No preslaughter withdrawal, no milk discard. Quart.