Advantage Puppy and Small Breed Flea Spot-On for dogs under 4kg is a monthly topical flea treatment in a 4-pack. It kills fleas on contact without needing them to bite, and also controls biting lice — designed for the lightest weight tier.

Each pipette delivers imidacloprid, which kills fleas on contact within minutes and stops re-infesting fleas from biting within 3–5 minutes. The formula also kills larval flea stages in the dog's surroundings and reduces flea allergy dermatitis. Water-resistant, and safe for puppies from birth and for pregnant and lactating dogs.

Flea allergy dermatitis is common in small dogs and puppies, and Advantage's contact-kill mechanism is the key differentiator — fleas die before they bite, so even a single re-infesting flea doesn't trigger a reaction.