K9 Advantix II Flea & Tick Topical for Medium Dogs, 11–20 lb, 4 Doses

K9 Advantix II is a monthly topical flea and tick treatment for dogs weighing 11–20 lb (5–9.1 kg), providing protection against five pests in a four-dose pack.

• One dose protects for 30 days against fleas, ticks, mosquitoes, biting flies, and lice — a single monthly application covers five common pests.
• Kills fleas within 12 hours of application — helps address an active flea infestation.
• Kills and repels fleas and ticks through contact — they do not need to bite your dog to die.
• Waterproof after 24 hours and fragrance-free — suits dogs with indoor or outdoor routines.
• For dogs at least 7 weeks old and weighing 11–20 lb (5–9.1 kg) — use the medium-dog size range.

Fleas and other pests can bother dogs indoors as well as outdoors, and some pests may transmit disease. This spot-on treatment is made for monthly pest control without a pill or flea collar: the liquid is applied topically in seconds, and no prescription is needed. The four-dose pack provides multiple monthly treatments for ongoing use.

Which pests does K9 Advantix II protect against?

K9 Advantix II treats and prevents fleas, ticks, mosquitoes, biting flies, and lice on dogs. It also kills and repels mosquitoes, as well as fleas and ticks. For flea control, the treatment kills adult fleas on contact, so they do not have to bite your dog to die; killing adult fleas also stops them from laying eggs.

Flea control matters because fleas may contribute to flea allergy dermatitis and flea bite anemia, and may transmit tapeworms. Monthly use is intended to maintain protection against fleas. The product is veterinarian-recommended; Elanco Animal Health reference REF-23993 cites data on file.

• Protection covers five named pests with one monthly dose.
• Contact action targets adult fleas before they can lay eggs.
• Intended for dogs that spend time indoors or outdoors.

How quickly does it work, and when is it waterproof?

K9 Advantix II kills fleas on dogs within 12 hours of the initial application. The topical formula is waterproof 24 hours after application, so plan for that first-day interval before relying on its waterproof feature.

Apply the spot-on treatment according to the product label, which also provides information about application and potential side effects. The treatment is designed for monthly use. A dose takes seconds to apply, offering an alternative to giving a pill or fitting a flea collar.

• The 12-hour claim applies to killing fleas after the initial application.
• Waterproof performance begins 24 hours after application.
• The formula is fragrance-free.

Is this the right size for my dog, and what is in the pack?

This medium-dog formula is for dogs that are at least 7 weeks old and weigh 11–20 lb (5–9.1 kg). The pack contains four doses, with each dose intended for one monthly treatment.

Choose the size by your dog’s weight and age: both requirements apply. K9 Advantix II is for dogs only and must not be used on cats. It is available over the counter without a prescription.

• Pack size: four monthly doses.
• Minimum age: 7 weeks.
• Species restriction: do not use on cats.

K9 Advantix II suits dog owners looking for a quick-to-apply monthly topical treatment for a dog in the specified medium-weight range, whether the dog lives mainly indoors or spends time outside. Its four doses, five-pest coverage, and contact action make it a practical fit for a regular flea and tick routine. It is a dog treatment only, not a product for cats.

Ingredients

Imidacloprid, Permethrin, Pyriproxyfen