ZODIAC FLEA & TICK HOME SPRAYZodiac Flea & Tick Spray for Dogs & Cats is a fast acting and effective pest control solution that is suitable for cats and dogs. After just one use, it will kill off adult ticks (both American Dog and Brown Dog) as well as adult cat fleas and dog fleas. It will also prevent the hatching of flea eggs for up to two months. Zodiac recommends repeating use every month for maintenance or on a weekly basis for more severe flea problems.