CyLence Pour-On Cattle Insecticide is made especially for use on beef and lactating dairy cattle. Ready to use formula and does not need to be mixed. Use on cattle of all ages. Does not require meat withdrawal. Made with the active ingredient cyfluthrin. One application works effectively to control flies and lice for up to three weeks. Repels and controls the following pests: horn flies, face flies (the mechanical vector of the Moraxella bovis bacteria that causes pinkeye in cattle), biting lice, and sucking lice. Choose 1 pt container with integral self-applicator or 6 pt container applied with applicator gun (sold separately).