Frontline Plus for Small Dogs and PuppiesFor dogs and puppies 8 weeks or older weighing up to 22 lbs. No prescription required! Use this supply of flea and tick medication to keep your pet comfortable and pest free. This powerful formula kills fleas, ticks and chewing lice within 48 hours of application and continues working to protect your pet for up to 4 weeks. The formula is waterproof to keep it from washing off. Product Features: For dogs 8 weeks or older Apply once a month to control