K9 Advantix II Flea & Tick Spot Treatment for Dogs, 11-20 lbs
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$125.74Chewy Price
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About K9 Advantix II


Experience the Advantages of K9 Advantix II
Veterinarian-recommended K9 Advantix II kills fleas, ticks, mosquitoes and lice, and repels biting flies. Now you can help your dog fight these pesky pests through contact—no biting required. Convenient and easy to use, K9 Advantix II is for dogs and puppies 7 weeks of age or older. So help your pal get the effective protection he needs with all of the advantages of K9 Advantix II.
Why are Biting Bugs a Big Deal?
K9 Advantix II spreads over the skin and hair to kill and repel them through contact, meaning they do not have to bite to die. And if a flea, tick or mosquito is repelled, it cannot bite and transmit disease.


Why Choose K9 Advantix II?
Fleas, ticks and mosquitoes can negatively affect your pet's health. It's important to use an effective product that kills pests which can spread disease. Fleas can cause flea allergy dermatitis, an allergic reaction that can lead to constant scratching, severe itching and even hair loss. Ticks can transmit deadly diseases, such as Lyme disease and Rocky Mountain spotted fever. And mosquitoes can potentially carry dangerous diseases, too, including heartworm. K9 Advantix II should not be used in place of a heartworm disease prevention product.
Is K9 Advantix II the Right Choice for Your Dog?
Whether your dog is a winter snow hound or a summer backyard explorer, an sunseeker or an outdoor enthusiast, choose K9 Advantix II to help keep fleas, ticks and mosquitoes from interrupting his favorite activities year-round. If you want to return the love to your dog, take care of him with flea prevention that works to kill the fleas you see and the ones you don't.

K9 Advantix II Has a Treatment for Dogs Large and Small

K9 ADVANTIX II FLEA & TICK TREATMENT FOR SMALL DOGS
4-10 pounds

K9 ADVANTIX II FLEA & TICK TREATMENT FOR MEDIUM DOGS
11-20 pounds

K9 ADVANTIX II FLEA & TICK TREATMENT FOR LARGE DOGS
21-55 pounds

K9 ADVANTIX II FLEA & TICK TREATMENT FOR EXTRA LARGE DOGS
55 pounds and over
Do not use K9 Advantix II on cats.
About K9 Advantix II
K9 Advantix II is manufactured by Bayer, a leading name in the healthcare industry for over 150 years. K9 Advantix II is a monthly flea, tick and mosquito treatment for your dog that kills through contact—no biting required. It starts working to kill fleas within 12 hours of application and is veterinarian recommended, so you can feel confident knowing that your pet is getting effective protection.
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Lifestage | Adult, Puppy, Senior | Adult, Puppy, Senior | Puppy, Adult, Senior | Adult, Puppy, Senior | Adult, Puppy, Senior |
Breed Size | Small Breeds | Small Breeds | Small Breeds | Extra Small & Toy Breeds | Small Breeds, Medium Breeds |
31 Customer Questions
I see a lot of reviews for fleas but I have a trouble with ticks. How good is this at preventing and killing ticks?
Answer by • Mar 13, 2018
This product repels and kills ticks including Deer ticks, American dog ticks, Brown dog ticks, and Lone Star ticks for up to 4 weeks.
What's the expiration date? I can't find it on the box?
Answer by • Mar 19, 2018
This product does not have an expiration date. It will be safe to use as long as you store unused containers in their original packaging and at room temperature.
does it kill the eggs and mosquitos
Answer by • Mar 25, 2018
The Treatment kill fleas of all stages and also repels and kills mosquitoes.
Can this product be used at the same time as heartworn medications
Answer by • Oct 23, 2017
We'd recommend speaking with your veternarian before applying this treatment while using heartworm medication.