Endure fly spray for horses provides repellency, quick knockdown and long lasting protection against horse, house, stable, face, horn, and deer flies, gnats and mosquitoes. Also protects from lice, ticks and deer ticks that may transmit Lyme disease. Sweat and water resistant fly control formula also features sunscreen and RepeLock conditioner for skin and coat that binds to hair shaft. Won it sweat off. Contains 0.15% cypermethrin, 0.2% pyrethrins, 1.6% piperonyl butoxide and 5% butoxypolypropylene glycol.Use after brushing, shampooing and drying.