Cotex Multi-Purpose Insecticidal Spray & Pine Oil Cleanser for Dogs and Horses controls Fleas, Lice, Flies, Mites and the Adult Brown Tick on Dogs. Aids in the control of Queensland Itch on Horses.DO NOT USE ON CATS. DO NOT USE ON ANIMALS UNDER 3 MONTHS OF AGE.More Information:A very popular and highly effective Flea and Tick kill formulation. The main active, Permethrin, lasts for a few days, however during the Flea season the animal should be sprayed daily and the product brushed..