Bronco Gold Equine Fly Spray provides a protective hair coating against flies while imparting a high sheen to the hair when brushed out. Repels and kills stable flies, horn flies, house flies, face flies, horse flies, deer flies, mosquitoes and gnats. Bronco Gold Equine Fly Spray is oil based and acts as a grooming aid and conditions the coat. It contains 0.10% pyrethrins, 1.0% piperonyl butoxide and 7.5% butoxypolypropelene glycol.