K9 Advantix II Large Dog Flea & Tick Treatment – 6 Month Supply

K9 Advantix II Large Dog Flea & Tick Treatment – 6 Month Supply

$71.17
$71.17 $79.97
SAVE 11% Sold out

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K9 Advantix II Large Dog Flea & Tick Treatment – 6 Month Supply

K9 Advantix II Large Dog Flea & Tick Treatment – 6 Month Supply

$71.17
$71.17 $79.97
SAVE 11% Sold out

Give your dog the protection they deserve with K9 Advantix II for Large Dogs, the #1 vet-recommended triple-action treatment that defends against fleas, ticks, and mosquitoes before they even bite.

Specially formulated for dogs weighing 21–55 lbs, this powerful topical treatment offers 6 months of continuous protection and peace of mind. It starts killing fleas within 12 hours of application and continues working for 30 days per dose—killing not only adult fleas but also eggs, larvae, and pupae to break the flea life cycle.

Unlike oral medications, K9 Advantix II works on contact—meaning pests don’t have to bite your dog to die. It also repels and kills mosquitoes, ticks, biting flies, and lice, helping prevent painful bites and potential diseases.

With waterproof protection and once-a-month dosing, K9 Advantix II makes pest control simple, effective, and worry-free—all in a single, easy step.

🌟 Key Benefits

✅ Triple Protection – Kills and repels fleas, ticks, and mosquitoes.

✅ Fast-Acting Relief – Starts killing fleas within 12 hours of application.

✅ Vet-Recommended Formula – Proven safe and effective for large dogs.

✅ Breaks the Flea Life Cycle – Eliminates eggs, larvae, and adult fleas.

✅ 6-Month Supply – Long-lasting protection with 6 monthly doses.

✅ Waterproof & Easy to Apply – Effective after bathing, swimming, or rain.

✅ For Dogs 21–55 lbs – Designed for medium to large breeds.

🧬 How It Works

K9 Advantix II combines Imidacloprid, Permethrin, and Pyriproxyfen to kill and repel pests at every stage of life. These ingredients spread across your dog’s skin and coat through natural oils, providing full-body protection against fleas, ticks, and mosquitoes — without the need for pests to bite first.

📦 What’s Included

6 × Pre-measured monthly doses (6-month supply)

Step-by-step application guide

💡 Why Pet Owners Love It

No pills, no collars, no worries — just one monthly topical treatment that gives your dog complete outdoor protection. Trusted by veterinarians and pet parents alike, K9 Advantix II helps your furry friend stay safe, comfortable, and pest-free all year long.

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Advanced Flea, Tick & Lice Protection You Can Trust

Keep your cats and dogs protected with a proven formula designed to eliminate fleas, ticks, flea eggs, flea larvae, and chewing lice. Trusted by pet owners for fast-acting, reliable monthly protection.

Trusted Protection. Everyday Comfort.

Keep your pets protected from fleas and ticks with a long-lasting solution that's simple to use, veterinarian recommended, and designed for everyday comfort.

Month-Long Protection in Just One Application

Keep your dog protected from fleas, ticks, mosquitoes, and biting flies with a fast-acting formula that delivers reliable protection for up to 30 days.

Compare Our Trusted Flea & Tick Protection Brands

Find the right flea and tick protection by comparing the key benefits of our most trusted pet care brands.

Features Frontline Plus Advantage II K9 Advantix II Seresto
Kills adult fleas
Kills flea eggs
Kills flea larvae
Protects against ticks
Repels mosquitoes
Repels biting flies
Kills chewing lice
Waterproof protection
Monthly topical treatment
Up to 8 months protection
Easy to apply
Suitable for cats
Suitable for dogs

    Frontline Plus

    Frontline Plus helps protect cats from fleas, flea eggs, flea larvae, chewing lice, and ticks. It also helps break the flea life cycle by preventing future infestations.
    Apply one dose every 30 days for continuous flea and tick protection. Regular monthly treatment provides the best results.
    Yes. Frontline Plus for Cats is suitable for kittens 8 weeks of age and older that meet the minimum weight requirements listed on the package.

    Seresto

    Seresto provides continuous flea and tick protection for up to 8 months without the need for monthly applications.
    Yes. Seresto remains effective after occasional exposure to water, including rain and bathing, although excessive water exposure may shorten its effectiveness.
    Yes. The collar is designed for continuous wear and should remain on your pet to maintain uninterrupted protection.

    Advantage II

    Advantage II kills adult fleas, flea larvae, and flea eggs to help stop flea infestations quickly and effectively.
    Advantage II begins killing fleas within hours after application and continues protecting your cat for up to one month.
    Yes. Indoor cats can also be exposed to fleas, making monthly flea prevention an important part of their health care.

    K9 Advantix II

    K9 Advantix II helps protect dogs against fleas, ticks, mosquitoes, biting flies, and lice.
    No. K9 Advantix II is formulated only for dogs and should never be used on cats.
    Apply one treatment every month to maintain continuous protection against fleas, ticks, mosquitoes, and other listed pests.