K9 Advantix II Flea & Tick Spot Treatment for Dogs, over 55 lbs
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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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Price | $69.98Chewy Price | $69.98Chewy Price | $59.98Chewy Price | $69.98Chewy Price | $69.98Chewy Price |
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Top Ingredients | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%.... | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%... | Active Ingredients: Imidacloprid 9.10%, Pyriproxyfen 0.46%. | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%.... | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%.... |
Lifestage | Adult | Adult, Puppy, Senior | Adult | Adult, Puppy, Senior | Adult, Puppy, Senior |
Breed Size | Large Breeds, Giant Breeds | Small Breeds, Medium Breeds | Large Breeds, Giant Breeds | Small Breeds | Extra Small & Toy Breeds |
38 Customer Questions
Where is the manufacturer date on the box?
Do the boxes have an expiration? We have some unopened tubes from last year, still.
Answer by • Jul 02, 2017
This item doesn't have an expiration date, but rather a manufacturers date on the box. After two years, this item may start to lose its potency, but it doesn't expire.
Will Advanix kill Heartworms as will as Flea's and Ticks
Answer by • Jun 02, 2021
This treatment is specifically formulated to repel and kill fleas, ticks and mosquitoes. It kills all life stages of fleas to prevent re-infestation and also kills lice and repels biting flies.
My dog is over 100 lbs. will this work
Answer by • Sep 10, 2018
This treatment is for dogs that are over 55 pounds.