SWAT Clear Fly Repellent Ointment is a petroleum-based salve built around pyrethrins, piperonyl butoxide and di-n-propyl isocinchomeronate, ingredients chosen to repel and knock down house, stable, face and horn flies. The clear formula is meant for discreet use on the face, ears and other sensitive or hard-to-reach areas, as well as the skin surrounding cuts, scratches and abrasions. Each jar holds a smooth, easy-to-dab ointment that is applied with a finger to the area around an irritation rather than directly onto open skin. The label calls for daily reapplication to maintain coverage and specifies use only on horses, ponies and dogs over 12 weeks of age. No tools or setup are required beyond opening the jar, and hands should be washed with soap and water after each application. Because it is a pesticide product, it should be stored away from children and kept from freezing.