K9 Advantix II helps defend your dog against fleas, ticks, mosquitoes, biting flies, and lice. Simpler than a flea collar and troublesome pills, this vet-recommended topical formula works within 12 hours of initial application, killing adult fleas on contact to stop existing flea infestations and prevent new ones. Once K9 Advantix II is applied, your dog is ready to get right back to the things it loves most. K9 Advantix II pest protection is effective on both indoor and outdoor dogs. Your dog should be at least 7 weeks old and weigh over 55 lbs. to use K9 Advantix II Extra Large Dog. K9 Advantix II Extra Large Dog is a trademark of Elanco or its affiliates.Key Features

• K9 Advantix II Extra Large Dog 30-day treatment & prevention protects dogs over 55 lbs. from fleas, ticks, mosquitoes, biting flies and lice

• Kills fleas within 12 hours of application

• Vet-recommended formula kills & repels on contact so fleas dont have to bite your dog to die

• Easy-to-apply topical treatment is fragrance-free and waterproof after 24 hours

• No prescription needed