Advantix II - Flea & Tick Medicine - Extra Large Dogs

The K9 Advantix II Flea & Tick Medicine – Extra Large Dogs is a monthly topical solution designed for dogs weighing over approximately 55 lb (25 kg). Applied to the skin, this treatment kills fleas, ticks, mosquitoes, lice and biting flies by contact—meaning pests don’t have to bite your dog to be affected. It’s a reliable choice for large-breed dogs who spend time outdoors or require strong parasite protection.

Key Features:

• Formulated for dogs over roughly 55 lb (25 kg) (extra-large size)

• Kills fleas at all life stages (adults, eggs, larvae) plus ticks and mosquitoes through contact

• Monthly application — waterproof after 24 hours and remains active despite swimming or bathing

• Strong protection ideal for large outdoor dogs or multi-dog households

• Important caution: Unsafe for cats — dogs treated must be kept separate from cats for at least 24–48 hours after application