Advantage is a monthly spot-on flea treatment for dogs that kills fleas on contact — no biting required. It uses imidacloprid as the single active ingredient and provides fast-acting flea and lice control in a simple once-a-month topical.

The formula kills adult fleas on contact within minutes and stops re-infesting fleas from biting within 3–5 minutes. Flea larvae in the dog's environment are also targeted, which helps break the re-infestation cycle that keeps households in a loop of treating and re-infesting. Water-resistant once dry, and safe for puppies from birth and for pregnant and lactating dogs. Also treats and controls biting lice.

Advantage focuses on fleas without bundling in tick or worm ingredients, which suits households that prefer to run each parasite category as a separate product. The contact-kill mechanism is especially useful for dogs with flea allergy dermatitis where a single bite can trigger weeks of scratching.