Advantage Aqua for Medium Dogs 4–10kg is a monthly spot-on flea treatment that kills fleas on contact without requiring them to bite. The aqua pack covers the medium-dog weight tier and provides fast-acting flea control for dogs with regular household and outdoor exposure.

Imidacloprid kills adult fleas on contact within minutes and stops re-infesting fleas from biting within 3–5 minutes. The formula also targets flea larvae in the dog's surroundings and reduces the incidence of flea allergy dermatitis. Water-resistant once dry, and safe for puppies from birth and for pregnant and lactating dogs. Also treats and controls biting lice.

Advantage's contact-kill mechanism is its main differentiator — fleas don't need to bite the dog to be killed, which makes it the better choice for dogs with flea allergy dermatitis where even a single bite causes a reaction.