On Sale

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

  • Was:

    $57.70

  • Price:

    $51.99 FREE 1-2 Day Shipping on this item

  • You Save:

    $5.71 (10%)

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 11 - 20 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
    Small Breeds, Medium Breeds
  • Lifestage
    Adult, All Stages

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

584 reviews 584 Reviews 4.6 out of 5 Stars

95% Recommend

95% of reviewersrecommend this product

4.6 / 5
Write a Review

You've Already Reviewed This Item

Showing 1-10 of 584 Reviews

Sort by:
Filter by:
  • Fantastic Product

    By on

    Ordered this product for my female Standard Schnauzer, 8 years old @ 30 lbs, as well as, my female French Bulldog, 14 years old @ 25 lbs.. After I found a flea on the Standard Schnauzer. Our vet wouldn't give us their Revolution Treatment because they want me to bring my French Bulldog (traveling extremely stresses her out) since the breeds avg life span is 9 yrs I'm not going to subject her to unneeded stress. I applied the product, that arrived literally the next day, 2 weeks ago and my husband and myself have both checked them numerous times ~ they're both flea free. I caught the flea situation before it became a full blown infestation so it only required 1 dose per dog. If the one application Ordered this product for my female Standard Schnauzer, 8 years old @ 30 lbs, as well as, my female French Bulldog, 14 years old @ 25 lbs.. After I found a flea on the Standard Schnauzer. Our vet wouldn't give us their Revolution Treatment because they want me to bring my French Bulldog (traveling extremely stresses her out) since the breeds avg life span is 9 yrs I'm not going to subject her to unneeded stress. I applied the product, that arrived literally the next day, 2 weeks ago and my husband and myself have both checked them numerous times ~ they're both flea free. I caught the flea situation before it became a full blown infestation so it only required 1 dose per dog. If the one application hadn't worked you can reapply the product a week later. All local stores were selking 2 dose boxes of the same product for $40-$50 USD ea. I can also tell you their customer support is beyond awesome, after placing my order on a Thursday, I called to ask if when I should expect it to arrive. As it was 1 to 2 day shipping and was informed they ship on Saturdays, but as stated above it arrived about 30 hours after ordering. … more

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

    By on

    We have been battling fleas in our yard and on our pup for months. We have tried treating the yard, bathing her consistently, and other topical flea treatments. Within one day of applying this treatment, the fleas were completely gone. We applied it a couple weeks ago and have checked every day, and have yet to see a single flea! I know others mentioned that this irritated their dogs skin, but we didn't notice any significant irritation...maybe some redness the first day.

    You liked it! Something went wrong. Please try again later. Report
  • Coop is still scratching :/

    By on

    Made the mistake of trying to find a different flea medicine in the middle of summer without having something to immediately put him on. Wasn't even a full month, but baby boy was swarmed. Got this asap, and the number of fleas had drastically gone down, but he is still scratching a lot. It has been about 2 weeks and I'm considering just giving him a second dose now, but I'm not sure if it is that the meds didn't work or that my roommate's dogs are the cause of his problem.

    You liked it! Something went wrong. Please try again later. Report
  • K9 Advantix 2

    By on

    I have used this product (including the earlier version, K9 Advantix) on my dog(s) for years. Pros: 1) highly effective; 2) costs about half as much as newer oral product Nexgard. Cons (minor): 1) makes the dog's back itchy for a day or two; 2) while application takes only a minute, it is a 2-person job, with one person holding the dog still and properly positioned while the other applies the product. I will be switching to an oral product (Nexgard) that is now available at my vet's recommendation. While Advantix II is not hard to use, the monthly oral product will be even easier to administer. Also, my new dog has a very long lean torso and is very flexible, so unlike most dogs, he I have used this product (including the earlier version, K9 Advantix) on my dog(s) for years. Pros: 1) highly effective; 2) costs about half as much as newer oral product Nexgard. Cons (minor): 1) makes the dog's back itchy for a day or two; 2) while application takes only a minute, it is a 2-person job, with one person holding the dog still and properly positioned while the other applies the product. I will be switching to an oral product (Nexgard) that is now available at my vet's recommendation. While Advantix II is not hard to use, the monthly oral product will be even easier to administer. Also, my new dog has a very long lean torso and is very flexible, so unlike most dogs, he is actually able to lick the last few inches of the top of his back, making application to that important area problematic. However for the typical dog who is not SUPER flexible, and to lessen expenses, Advantix II is fine. … more

    You liked it! Something went wrong. Please try again later. Report
  • Easy, not oily, application

    By on

    We generally use PetArmor Plus but because of my dog's recent skin allergy breakout we decided to buy K9 Advantix again. I forgot how simple to open the package is, no mess or scissors needed. I applied in 6 spots on my shepard-mixes back and love that it did "run" all down his fur and did not leave big oil/medicine spots in his fur. I hate having to be careful where petting after applying the monthly flea treatment and with K9 Advantix I barely notice it on him at all and have not had residue on my hands with the pets I have given him. Will definitely be switching to K9 Advantix regularly, especially since Chewy offers a 2-pack at a price I can afford in my currently fixed income.

    You liked it! Something went wrong. Please try again later. Report
  • not happy with this product

    By on

    I have used this product for years and it has always done the job of keeping fleas and ticks away, but not this year i'm not sure why, i checked to see if maybe it was expired ,but i could not find a date, and i'm thinking it's not because I just purchased it a month ago from chewy. Well after giving him his first dose i noticed he was still unhappy so i read the box and it said for use on fleas use every two weeks, so i did i gave my dog a second application but still my rottie is not happy! Thinking about switching to seresto. oh and i did get the extra large

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

    By on

    We have never had problems with fleas on our dogs until this year. This year has been awful! Our groomer recommended K9 advantix II for our medium dog and two large dogs. Within two days we could tell a difference in the amount of chewing and scratching with all three dogs. It has really helped make them more comfortable and kept the fleas to a minimum.

    You liked it! Something went wrong. Please try again later. Report
  • Great Product at a Great Price

    By on

    K9 Advantix II is a great product for treating your dogs for flea and ticks. Easy to apply and easy to pay. Chewy has this for you at a very resonable price. This is the only treatment product I use on my dogs.Shipping is fast also, why would you want anything else, when the K9 Advantix II is all you need.

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

    By on

    My dog is 20.2 lbs. I used to use medium dog package (up to 20#) and didn't seem to work but since he is a little over 20#, I've decided to use level up :) . Sure enough it worked within 48 hours. I'm not sure if it was too strong for him but so far, he's good. The order was arrived in couple of days as promised.

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

    By on

    First treatment worked well, each of the subsequent 2 treatments was less effective. Last one did not last more than a week. Investigating alternatives, a product this expensive should be consistently effective. Maybe chalk it up to Gulf Coast fleas being tougher?

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