K9 Advantix II Flea & Tick Treatment for Dogs over 55 LB – Pets Go Here
Free Ground Shipping on all orders over $35

K9 Advantix II Flea & Tick Treatment for Dogs over 55 LB

Size Chart
Add to Wishlist

Why choose K9 Advantix II

  • Kills fleas, ticks and mosquitoes through contact. No biting required.
  • Kills all flea life stages
  • Veterinarian recommended
  • Convenient, easy to apply
  • Kills lice and repels biting flies
  • Waterproof

No biting required!

Kill fleas, ticks and mosquitoes through contact.

Veterinarian-recommended K9 Advantix II kills fleas, ticks, mosquitoes, and lice, and repels biting flies. And because it works through contact, there’s no biting required. Convenient and easy to use, K9 Advantix II is suitable for dogs and puppies 7 weeks of age or older.

Why are little bites a big deal?

When fleas, ticks and mosquitoes bite your dog, they can cause irritation and transmit deadly diseases. Oral and chewable products don't kill fleas and ticks unless they bite your dog. K9 Advantix II doesn't require a bite to die - no biting required.

Do not use on cats.

Is K9 Advantix II the right choice for your dog?

If your dog shares your lifestyle — whether hiking in the woods, walking in the neighborhood or lounging by the TV on Sunday afternoon — choose K9 Advantix II. Just one K9 Advantix II treatment helps protect your dog from fleas, ticks And mosquitoes for 30 days. Frontline Plus offers no mosquito protection.*

Better yet, unlike oral products such as NexGard, Bravecto, and Comfortis, K9 Advantix II does not require a prescription or a bite from fleas or ticks to die.

Do not use K9 Advantix II on cats.

*Based on label claims.

K9 Advantix Seresto Frontline Plus Capstar
Seresto Frontline Plus Capstar
Kills Kills All flea life stages, ticks, mosquitoes Adult fleas, flea larvae, ticks Multiple flea life stages Adult fleas
Treatment or Prevention Treatment & prevention Treatment & prevention Treatment & prevention Treatment
Frquency Monthly Every 8 months Monthly Up to once per day
Dosing Method Topical Collar Topical Oral soft chew


USE ONLY ON DOGS AND PUPPIES 7 WEEKS OF AGE AND OLDER . DO NOT USE ON CATS. Do not get this product in dog's eyes or mouth. As with any product, consult your veterinarian before using this product on debilitated, aged, pregnant or nursing animals. Individual sensitivities, while rate, may occur after using ANY pesticide product on dogs. If signs persist, or become severe, consult a veterinarian immediately. If your animal is on medication, consult your veterinarian before using this or any other product. Keep out of reach of children.

New look, same great formula! This product has recently undergone a packaging change. Customers may receive old packaging during this transition.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Recently Viewed Products