Advantage for Puppies and Small Dogs up to 4kg is an easy-to-use spot-on flea treatment. Its super ingredient stops fleas biting within 3 to 5 minutes and kills both adult fleas and larvae within 20 minutes. Since Advantage works on contact so fleas don’t need to bite, dogs suffer fewer painful flea bites, reducing outbreaks of Flea Allergy Dermatitis.Advantage also controls lice. Advantage is the only flea product you need as it breaks the flea life cycle. Advantage kills fleas in your dog's surroundings – your home. It even provides protection for your dog when it comes into contact with other pets that have fleas. Advantage is applied monthly and provides month long protection. It is water-resistant so it won’t wash off. Advantage for Puppies and Small Dogs up to 4kg is safe for puppies of any age, One applicator treats small dogs and puppies up to 4kg bodyweight. SIZES: Single; Pack of 4; Pack of 6. ***Please Note: This product can not be shipped to Canada as it contains Imidaclorprid.