This triple action formula not only kills adult fleas and ticks it also contains the Insect Growth Regulator S Methoprene to kill flea eggs and larvae to prevent flea infestation in your home for up to 7 months. Kills 99% of adult fleas within 10 minutes and continues to work for 10 days. Kills 100% of ticks, cockroaches, and ants on contact. Easy to apply aerosol reduces hand fatigue. 16 oz. treats up to 2,000 sq. ft.