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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.
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Help protect your precious pooch from parasitic pests and the potentially harmful diseases they can transmit with K9 Advantix II Flea & Tick Treatment for Large Dogs. This broad-spectrum, veterinarian-recommended treatment is specifically formulated to repel and kill fleas, ticks and mosquitoes on contact with no painful biting required. It further kills all life stages of fleas to prevent re-infestation, and even kills lice while also repelling biting flies. The waterproof formula for puppies and dogs 7 weeks or older and weighing between 21 and 55 pounds continues working for up to four weeks, even after bathing or swimming.
Proudly sourced directly from the manufacturer. Guaranteed genuine and backed by the manufacturer.
Specifications
Item Number
334267
Usage
Prevention
Repels or Prevents
Fleas, Ticks, Mosquitoes
Kills or Treats
Fleas, Ticks, Mosquitoes
Lifestage
Adult, Puppy, Senior
Breed Size
Small Breeds, Medium Breeds
Product Form
Solution
Health Condition
Fleas, Ticks, Mosquitoes
Precautions
USE ONLY ON DOGS AND PUPPIES 7 WEEKS OF AGE AND OLDER AND WEIGHING 21 - 55 LBS. 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.
Ingredients
Ingredients
Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%
Instructions
How to open:
Be sure tube is at bottom of pouch.
Using scissors, cut the pouch across the top and remove tube.
How to apply:
Use only on dogs.
Remove applicator tube from the package. Use scissors and peel down foil.
Hold applicator tube in an upright position. Pull cap off 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 empty tube.
In cases of severe pest infestations, retreatment is allowable earlier than 4 weeks. Do not retreat more often than once every 7 days. After pest control is attained, return to a monthly retreatment schedule.
We source all our products from manufacturer approved distributors or directly from the manufacturers. Chewy takes pride in ensuring that our furry friends’ wellbeing is always our top priority. We have worked hard to partner with all of the manufactures to deliver 100% authentic products
How long after using another topical product do I need to wait before applying K9 Advantix II?
Please consult your dog’s veterinarian for their recommendation. Do not use K9 Advantix II on cats.
How long does K9 Advantix II last?
A single application of K9 Advantix II keeps working for a month. Do not use K9 Advantix II on cats.
Can I bathe my dog after applying K9 Advantix II?
Yes! However, we suggest bathing your dog before applying K9 Advantix II. Just make sure your dog is thoroughly towel dried. If you choose to bathe your dog in between treatments, we recommend use of a general grooming shampoo for pets. Do not use K9 Advantix II on cats.
Can I apply K9 Advantix II more than once a month?
A single application of K9 Advantix II remains effective for four weeks. However, if the dog has a severe infestation, retreatment within a month may be necessary. Do not retreat more than once every seven days not to exceed weekly treatments. After flea control is attained, return to a monthly treatment schedule. Do not use K9 Advantix II on cats.
Why do I still see fleas after using K9 Advantix II?
Although K9 Advantix II kills fleas on your dog, there may still be fleas in your dog's environment that have since jumped on after treatment. Luckily, with K9 Advantix II, new fleas are killed within 2 hours with protection against further infestation for at least 4 weeks. As fleas die they are no longer able to stay hidden against your dog's skin, and therefore you may also be seeing dying fleas coming to the surface of your dog's fur coat. Do not use K9 Advantix II on cats.
How long does it take for K9 Advantix II to work on fleas?
K9 Advantix II kills fleas within 12 hours. New fleas that jump on the dog from the surroundings, such as grass, carpet and pet bedding, are killed within 2 hours with protection against further infestation for at least 4 weeks. Do not use K9 Advantix II on cats.
Can my dog go swimming after using K9 Advantix II?
Yes! Your dog is free to take a dip after K9 Advantix II has been on for 24 hours. More frequent swimming may keep the product from working for the full 30 days. Do not use K9 Advantix II on cats.
How does K9 Advantix II work?
Not all products work the same way: K9 Advantix II is applied to the pet's skin, spreading the active ingredients over your dog's body to kill fleas, ticks and mosquitoes through contact. No biting required! Do not use K9 Advantix II on cats.
Learn More About K9 Advantix II From Our Team of Experts
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.
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 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%....
Active Ingredients: Imidacloprid 8.80%, Permethrin 44.00%, Pyriproxyfen 0.44%....
Dinitefuran, Pyriproxyfen, Permethrin.
Lifestage
Adult, Puppy, Senior
Adult
Adult, Puppy, Senior
Adult, Puppy, Senior
Puppy, Adult, Senior
Breed Size
Small Breeds, Medium Breeds
Large Breeds, Giant Breeds
Small Breeds
Extra Small Breeds
Medium Breeds
Questions & Answers
31 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.
Can I use K9 Advantix II on my indoor dogs if I have indoor cats?
Answer by • Oct 20, 2022
This flea and tick treatment should not be ingested. Cats should not come into contact with this product, so they should be placed in a different environment while this treatment 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.
I have an inside dog & was wondering if I treated my dog while he stayed inside if the fleas would jump off him & make their home in my house??
Answer by • Nov 21, 2017
This treatment kills pests on contact so, they won't invade your home.
My dog Kevin who is a mini berniedoddle had a horrible reaction to this tick med. He was visibly very itchy and was rubbing his back in the snow. I looked closer and the places I put the medication his skin was very red. I washed it off him as much as I could immediately. It also smelt horrible.
Rated 1 out of 5 stars
By pbnjz on Oct 11, 2022
K9advantix II
Awful..
Spent over $100 trusted in the name and my dog has been suffering for 2 months. I was so sure it was not the drops I even argued with my veterinarian claiming the drops were working but to my ignorance they were not!! Now I've had to buy antibiotics and ointments to try to relieve his skin condition and now that I've put him on NexGard it's all cleared up.
Very disappointed. I'm a grandma who now inherited and raising a granddaughter and her pup on a limited budget.
Rated 2 out of 5 stars
By molly on Nov 3, 2022
k9 advantix
i used it since the from the 20th of september ,molly still has very bad itching problem. this is why no one wanted her . i live on 800 a MONTH HAVE A FRACTURED SPINE AND ALMOST GIVING UP I DONT HAVE A EXTRA DIME FOR THIS CONSTANT ISSUE. THE FLEA JUICE SOME WHAT HELPED AFTER 15 DAYS FLEAS WERE BACK
Rated 4 out of 5 stars
By Isabelle on Dec 9, 2022
Worked at first
This seemed to work the first couple days, then it lost the effectiveness. I found live flea on my dog within a week and a half of the application.
Rated 1 out of 5 stars
By EhMf on Dec 7, 2022
Did not work
Bought two 6 month boxes and did not help my dogs at all. It says kills fleas within 12 hours but they were still crawling around all over them.
Rated 1 out of 5 stars
By ACEG on Nov 6, 2022
Still have live ticks
I’ve had it on my dog a week. I am still finding large, blood filled ticks on my dog. I understand they have to bite her to work but they should die before they get engorged. Not happy with product.
Rated 1 out of 5 stars
By Mashuga on Nov 12, 2022
Waste of money
Noticed within hours my dogs didn’t feel good. That lasted over 24 hours. Never saw a reduction in fleas. Huge waste of money! I will never purchase this brand again.
Rated 1 out of 5 stars
By Oscar on Nov 1, 2022
does NOT work
Absolutely does not work. Does not repel, does not kill fleas. 3 days after applying my dog has fleas crawling around on him. Save your money and find a different product.
Rated 5 out of 5 stars
By Remy on Sep 24, 2022
Always the Best
Chewy gets a 5 star review in our home!
Always the best in....products, customer service representatives, on time deliveries, prices are even lower that what I can purchase at area stores...we just love Chewy and would recommend it to everyone!
Rated 5 out of 5 stars
By Greyhoundmama on Oct 25, 2022
Neighbor breeds feral cats...
So the fleas are terrible! My dogs would get hot spots without this stuff. They still get cat fleas if they go outside, but we have had no problem with fleas in the house.