3 applications. 3 month supply for dogs 21 to 39 lbs. With vitamin E. Fragrance free. Controls reinfestation for up to 9 weeks. Kills fleas in as little as 1 hour, ticks in as little as 3 hours, flea eggs, flea larvae. Sergeant's Evolve 21 Flea & Tick Squeeze-On for Dogs is an effective and easy to use product. As with all flea and tick control products, Sergeant's Evolve 21 Flea & Tick Squeeze-On for Dogs should be used as part of a program aimed at reducing flea populations in the dog's environment (bedding, carpets, kennel, yard). Made in USA.