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About This Item
- Broad-spectrum, veterinarian-recommended treatment repels and kills fleas, ticks and mosquitoes on dogs 7 weeks or older and weighing 21-55 pounds.
- Begins working within 12 hours and kills pests on contact.
- Kills all life stages of fleas to prevent re-infestation; also kills lice and even repels biting flies.
- Waterproof formula continues working for up to four weeks, even after bathing or swimming.
- Convenient, monthly topical application contains imidacloprid, permethrin and pyriproxyfen; available in packs of 2, 4 or 6 treatments.
Learn More About K9 Advantix II From Our Team of Experts
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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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| Customer Rating | |||||
| Price | $69.98Chewy Price | $69.98Chewy Price | $40.50Chewy Price | $40.50Chewy Price | $69.98Chewy Price |
| Autoship | $66.48Chewy Price | $66.48Chewy Price | $38.48Chewy Price | $38.48Chewy Price | $66.48Chewy Price |
| Top Ingredients | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%... | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%.... | Fipronil: 6.0%, Permethrin: 44.8%, Pyriproxyfen: 1.8%... | Fipronil: 6.0%, Permethrin: 44.8%, Pyriproxyfen: 1.8%... | Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%.... |
| Breed Size | Small Breeds, Medium Breeds | Large Breeds, Giant Breeds | Medium Breeds, Large Breeds | Large Breeds, Giant Breeds | Small Breeds |
36 Customer Questions
Do fleas have to bite my dog in order for the medication to work?
Answer by • Sep 01, 2017
The Flea and Tick treatment works to kill even without the bugs biting.
If my dog is 26lbs would I use the entire single use tube or about half? 21-55lbs seems like a large range when it comes to topical pesticides.
Answer by • Mar 09, 2018
This Treatment is formulated for dogs weighing anywhere between 21-55 pounds. It is recommended to use a complete tube per pet.
Can I use K9 Advantix II on my indoor dogs if I have indoor cats?
Answer by • Jul 02, 2017
Cats should not come into contact with this product, so they should be placed in a different environment while this item is being applied.
How do you apply the topical treatment? Is it messy?
Answer by • Sep 11, 2017
To apply, remove applicator tube from the package. Use scissors and peel down foil. Hold applicator tube in an upright position and pull the cap off the tube. Turn the cap around and place other end of cap back on tube. Twist cap to break seal, then remove cap from tube. The dog should be standing for easy application. The entire contents of the K9 Advantix II tube should be applied evenly on the top of the back from the shoulder to the base of the tail. At each spot, part the hair until the skin is visible. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. Do not apply an excessive amount of solution at any one spot that could cause some of the solution to run off the side of the dog. Discard the empty tube.