REPEL-35 INSECT CONTROL SPRAY 16 OZNew dimensions in residual action and safety with Permethrin, a synthetic pyrethrin.Permethrin assures prolonged residual action due to its high photostability and lower water solubility giving horses and dogs up to 35 days protection from horn flies, face flies, horses flies, mosquitoes, and gnats. Kills lice and louseeggs, ticks and fleas. Safe for repeated use. This gentle, non-irrtating water-based formula is enriched with Lanolin and Aloe Vera for horses and dogs with sensitive skin. Safe for dogs.