Bronco Equine Fly Spray is a water based repellent spray for horses; dogs and their premises. Repels and kills stable flies; horse flies; house flies; horn flies; deer flies; mosquitoes; lice and gnats. Also kills fleas and ticks on dogs. Bronco Equine Fly Spray contains 0.05% pyrethrins; 0.50% piperonyl butoxide; and 0.10% permethrin. Citronella scent.