This is an oil-based, ready-to-use liquid insecticide built around permethrin 1% combined with a piperonyl butoxide synergist. It is labeled for use on lactating and non-lactating dairy cattle, beef cattle, calves, and sheep to help control lice, horn flies, face flies, sheep keds, and several other biting and nuisance insects. The same liquid doubles as a premise spray for use in and around horse, beef, dairy, swine, sheep, and poultry facilities, animal hospital pens, kennels, and outside meat processing areas, where it helps control house flies, stable flies, gnats, mosquitoes, fleas, and crawling pests such as ants and spiders. Application is dosed by animal body weight and can be delivered as a pour-on along the back and face, as an undiluted mist spray, or through a back rubber charged with a diesel or mineral oil mixture. The one-gallon container is a non-refillable jug meant for direct use without dilution when applied to animals or premises. Handlers should avoid skin, eye, and clothing contact and store the product in its original sealed container away from food and feed.