Dogs are often exposed to fleas, ticks, mosquitos & other insects which spread serious diseases. Our uniquely formulated spray is head-and-shoulders above any other. First, we use 100% mammal-safe permethrin, in a concentration proven to kill insects, and prevent re-infestation. Second, we add iodine, which stops the diseases vectored by biting disease-transmitting insects. Third, a touch of isopropanol promotes rapid evaporation and consistency in spray. If you love your dogs, and want to avoid being bitten yourself, try our superior Flea & Tick Killer.