On Sale

K9 Advantix II Flea & Tick Treatment for Large Dogs 21-55 lbs

  • Was:

    $70.85

  • Price:

    $51.99 FREE 1-2 Day Shipping on this item

  • You Save:

    $18.86 (27%)

In stock
6 treatments
  • 2 treatments
  • 4 treatments
  • 6 treatments
- Quantity +

Description

K9 Advantix II Flea Treatment for Dogs offers broad spectrum flea control and protection against ticks and mosquitoes, too. It is specifically formulated for dogs and comes in a convenient, monthly topical application that not only kills but also repels fleas, ticks and mosquitoes. K9 Advantix II also kills all life stages of fleas, repels biting flies and kills lice. It contains imidacloprid, permethrin and pyriproxyfen that work in concert to repel and kill parasites that can potentially transmit disease-causing organisms. K9 Advantix II is a flea treatment for use on dogs 7 weeks and older. Do not use K9 Advantix II on cats.

Key Benefits

  • Specifically formulated for dogs and comes in a convenient, monthly topical application that not only kills but also repels fleas, ticks and mosquitoes
  • Repels and kills ticks of all types including Deer ticks, American dog ticks, Brown dog ticks and Lone Star ticks
  • Prevents fleas on treated dogs from infesting your home
  • Kills fleas on dogs within 12 hours and continues to prevent infestations for a month
  • Contains imidacloprid, permethrin and pyriproxyfen which work to repel and kill parasites that can potentially transmit disease-causing organisms

Cautions

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.

Active Ingredients

  • Imidacloprid 8.80%
  • Permethrin 44.00%
  • Pyriproxyfen 0.44%

See all items by K9 Advantix II

  • Item Number
    74405
  • Brand
    Bayer
  • Breed Size
    Medium
  • Lifestage
    Puppy, Adult

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.

Frequently Asked Questions

How is K9 Advantix II different from K9 Advantix?

With the addition of an insect growth regulator (IGR), K9 Advantix II kills all life stages of fleas. K9 Advantix II also prevents development of fleas, flea eggs, larvae (maggots), and pupae (cocoons), and prevents fleas on a treated dog from infesting your home.

What is the benefit of repellency?

Repellency helps prevent ticks, fleas, and mosquitoes from attaching, biting or feeding. A repelled parasite doesn’t bite or attach. If it doesn’t bite or attach, it can’t transmit the organisms that may cause disease.

What is the difference between K9 Advantix II and other tick and flea products?

K9 Advantix II repels and kills ticks, fleas, and mosquitoes. It repels biting flies and kills lice, too. Its repellency activity and broad spectrum make K9 Advantix II different from other tick and flea products.

Is K9 Advantix II waterproof?

Yes. There is no need to reapply the product after weekly swimming or a bath. For best results, use a non-detergent shampoo.

Can I use K9 Advantix II on my cat?

No. K9 Advantix II must not be used on cats because of a cat’s unique physiology and inability to metabolize certain compounds.

  1. K9 Advantix II Use & Care Instructions

Size

Dog Weight K9 Advantix II Volume
Under 10 lbs Small Dog 0.4 mL tube
11 - 20 lbs Medium Dog 1.0 mL tube
21 - 55 lbs Large Dog 2.5 mL tube
Over 55 lbs Extra Large Dog 4.0 mL tube

Pet Lovers Also Bought

Customer Reviews

536 reviews 536 Reviews 4.6 out of 5 Stars

96% Recommend

96% of reviewersrecommend this product

4.6 / 5
Write a Review

You've Already Reviewed This Item

Showing 1-10 of 536 Reviews

Sort by:
Filter by:
  • Worked perfectly on my puppy. Just two days and there was no more fleas!

    By on

    My boy is a Siberian and was 5 months old when I found fleas on him. Didn't want him to continue scratching and suffering with those evil fleas I odered this product from Chewy.com, and applied it to him right after it arrived. Two days later, there was no more fleas on him, even when I tried to find if there was any left. There was also no side effects on my boy. It has been almost two months and haven't seen any sign of the fleas coming back yet. Chewy.com has the best price for this product compares to all other pet stores and markets, so I did save some money to get my pup some other goodies. My boy would like to thank Chewy.com for helping him with those parasites and brings great deals My boy is a Siberian and was 5 months old when I found fleas on him. Didn't want him to continue scratching and suffering with those evil fleas I odered this product from Chewy.com, and applied it to him right after it arrived. Two days later, there was no more fleas on him, even when I tried to find if there was any left. There was also no side effects on my boy. It has been almost two months and haven't seen any sign of the fleas coming back yet. Chewy.com has the best price for this product compares to all other pet stores and markets, so I did save some money to get my pup some other goodies. My boy would like to thank Chewy.com for helping him with those parasites and brings great deals for his food, treats, and toys. Love Chewy.com! … more

    You liked it! Something went wrong. Please try again later. Report
  • Worked without any side effects on my dog

    By on

    I have a 3 month old Siberian Husky. I try to not over medicate my animals...but not fleas allowed. Within 12 hours of administering this product as recommended, I saw no signs of live fleas. A week later still no fleas. I hope it does last the full month. I did order the 6 dose pack as it is summer time. When the temperature goes over 80 degrees the biting - stinging- critters come out. I will check her for signs of fleas, no fleas no medication...first sign of fleas, medication is resumed. Always watch your pet for any signs of allergic responses to any and all medications and vaccines you or your vet gives them. Even if they were fine the last time...the next time they could I have a 3 month old Siberian Husky. I try to not over medicate my animals...but not fleas allowed. Within 12 hours of administering this product as recommended, I saw no signs of live fleas. A week later still no fleas. I hope it does last the full month. I did order the 6 dose pack as it is summer time. When the temperature goes over 80 degrees the biting - stinging- critters come out. I will check her for signs of fleas, no fleas no medication...first sign of fleas, medication is resumed. Always watch your pet for any signs of allergic responses to any and all medications and vaccines you or your vet gives them. Even if they were fine the last time...the next time they could have an allergic response. Please do your homework and know what to do ahead of time should your pet have any allergic responses. Vets, in some areas are not always on call 27-7. … more

    You liked it! Something went wrong. Please try again later. Report
  • Very disappointed

    By on

    So I decided to use this on my new puppy. It did not work! My puppy got fleas, not just with 1 application, but the second also..I don't know if it was a bad batch, or expired. I did look on the packaging for an expiration date, and could not find one. I have used K9 Advantage II on my past dogs with great results..so I don't know what happened. I will not order flea products from chewy, I'm not sure if the sell out of date products.

    You liked it! Something went wrong. Please try again later. Report
  • Amazing Results Quick-Fast

    By on

    Our new puppy had played outside in a field shared with stray cats. Upon giving her a bath I noticed fleas jumping off her coat. I ordered Advantix II and crossed my fingers. Instant results! She wasn't scratching like crazy the very same night! Also, on our many trips to the park she has never brought home a single tick even though I was warned this park was thick with them. I couldn't be more satisfied and I'll continue to use Advantix to keep my dog happy and healthy.

    You liked it! Something went wrong. Please try again later. Report
  • WORKS WELL

    By on

    I purchased this flea meds because none of the others were even working. This flea medicine has worked very well. We have fleas all over outside but this has kept them down. If youre treating just your animals then youre not going to get rid of the fleas. You also have to treat your yard. This by far is the best out there don't let frontline fool you, it doesn't work well anymore. And yes, I will be continuing to buy this!

    You liked it! Something went wrong. Please try again later. Report
  • Mosquitos too!

    By on

    After many flea treatments, vet visits, and infections from biting his hair out, I grabbed the Advantix II at the local pet store on a Sunday. I hadn't tried it yet because it cost a little more. IT WORKED! His hair grew back. We could sleep at night without my poor boy scratching and biting. He is also allergic to mosquitoes!!! He is beautiful again and we can sleep at night.

    You liked it! Something went wrong. Please try again later. Report
  • Excellent!

    By on Top 1000 Contributor

    We have been using this for a few months now and have has zero incidents of fleas or ticks. It works beautifully! What's bettter is we don't have to treat monthly with it as recommended since application lasts for at least two months. I love that I don't need to apply excessive chemicals to my boys.

    You liked it! Something went wrong. Please try again later. Report
  • Great repellent!

    By on

    Love that it has an option for a 2 pack! I try not to treat with chemicals whenever possible. This year the ticks are really bad so I had no choice, I've been using this for years and it works! When I'm out hiking with my dog I know he is protected against harmful ticks, I never see a tick or a flea on him when using it. He is a corgi and his hair is a bit long so the only drawback is that it makes his hair a bit greasy for a few days after applying it.

    You liked it! Something went wrong. Please try again later. Report
  • Works great!

    By on

    This product is working great for my cocker spaniel. We live in the woods, so don't want fleas or ticks on my pet! I read reviews prior to ordering on the best rated flea/tick product, and K9 Advantix II was rated the best. Good price and arrived super fast! Thanks Chewy.com

    You liked it! Something went wrong. Please try again later. Report
  • 2 Weeks That's All You Get

    By on

    I have four rescue dogs, including two new puppies which I've had now for about a month. When I first applied the Avantix II to them all you could tell it started working in just about 10 minutes as the dogs were biting a little bit. The next morning NO FLEAS, I thought how awesome is this. Skeptical (after other guick fixes that don't last) I waited to write this review. Two weeks later the scratching and itching came back. I looked on the packaging which states you can apply it more often than 30 days but I am on disability and a limited budget making reordering impossible. I grabbed my flea comb and started on one of my puppies, you can see the results in the picture. This is I have four rescue dogs, including two new puppies which I've had now for about a month. When I first applied the Avantix II to them all you could tell it started working in just about 10 minutes as the dogs were biting a little bit. The next morning NO FLEAS, I thought how awesome is this. Skeptical (after other guick fixes that don't last) I waited to write this review. Two weeks later the scratching and itching came back. I looked on the packaging which states you can apply it more often than 30 days but I am on disability and a limited budget making reordering impossible. I grabbed my flea comb and started on one of my puppies, you can see the results in the picture. This is just devastating for someone just trying to help. … more

    You liked it! Something went wrong. Please try again later. Report