Coopers Fly Repellent Plus is a ready to use, topical application to repel and kill biting insects and flies on horses. Also useful as an aid in the control of sweet itch, a condition believed to be caused by the midge culicoides pulicaris and for the treatment and control of infestations of the biting louse. Also shines horse's coats. A white silicon-based emulsion containing a fly repellent and a topical insecticide. Contains permethrin.