This formula is crafted with natural plant-based ingredients like cinnamon, clove and cedar oils. It’s designed to kill fleas on contact and to stay effective for up to seven days, to help your feline friend get the relief she needs. This easy-to-use solution not only kills fleas, but you can also use it on your pet to help repel mosquitoes and black flies. This flea spray conveniently works with spot-on flea treatments, so your furry friend can get all the protection she deserves.