Adams Flea and Tick Spray for Cats contains a highly effective combination of ingredients that provides quick relief from biting fleas, ticks, flea eggs and flea larvae. When applied as directed, our spray kills adult fleas and ticks upon contact and prevents flea eggs from hatching for up to 2 months. The spray is specially formulated to kill off unseen flea eggs laid on your pet, breaking the flea life cycle. Each treatment contains an Insect Growth regulator (IGR) that stops egg development, and other active ingredients: Etofenprox, (S)-Methoprene, and Piperonyl Butoxide that contribute to strong protection. Our proven effective spray even works to kill larger Deer ticks, which could carry Lyme Disease! All inside our ready-to-use trigger sprayer, Adams Flea and Tick Spray can be used on cats and kittens 12 weeks or older.