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K9 Advantix

K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 12-Mo Supply

  • Based on 7 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Jun 22
Order within 4 hours and 47 minutes
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Size: 12 Pack


Style: XL Dog only


Features

  • Contains one 6-pack, one 4-pack, and one 2-pack of K9 Advantix II for Extra Large Dogs over 55lbs. Do not use on cats.
  • K9 Advantix II Extra Large Dog 30-day treatment & prevention protects dogs over 55 lbs. from fleas, ticks, mosquitoes, biting flies and lice
  • Kills fleas within 12 hours of application
  • Vet-recommended formula kills & repels on contact so fleas dont have to bite your dog to die
  • Easy-to-apply topical treatment is fragrance-free and waterproof after 24 hours
  • No prescription needed

Description

K9 Advantix II Extra Large Dog is the veterinarian-recommended formula that helps defend your dog against five pests: fleas, ticks, mosquitoes, biting flies and lice. And unlike other treatments, K9 Advantix II kills and repels fleas, ticks and mosquitoes. K9 Advantix II topical treatment gets straight to work killing fleas on dogs within 12 hours of initial application. This formula stops existing flea infestations and prevents new ones by killing adult fleas on contact so they can’t lay eggs and they don’t have to bite your dog to die. K9 Advantix II Extra Large Dog topical, spot-on formula makes application simple - going on in seconds. You’ll also love that K9 Advantix II is fragrance-free and waterproof after 24 hours of application. K9 Advantix II pest protection is effective on both indoor and outdoor dogs. K9 Advantix II Extra Large Dog is a trademark of Elanco or its affiliates.

Brand: K9 Advantix


Item Form: Topical


Scent: Unscented


Dog Breed Size: Large


Age Range (Description): Adult


Date First Available ‏ : ‎ November 2, 2022


Manufacturer ‏ : ‎ K9 Advantix


Customer Reviews: 4.4 4.4 out of 5 stars 7 ratings


Manufacturer: K9 Advantix


Date First Available: November 2, 2022


Brand Name: K9 Advantix


Color: Extra-Large Dog only


Size: 12 Pack


Age Range Description: Adult


Style: XL Dog only


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Product works
Size: 2 Pack Style: XL Dog only
This product works. Easy to apply and seems to get rid of pests quickly. It lasts a long time too . After the first application I did not see any more fleas. I did mot have any trouble with my dogs getting irritated skin or any abdominal issues either like with other products I have used. I have both XL dogs and a small one. All had the same result. ... show more
Reviewed in the United States on April 21, 2025 by alex
    • Works great
Size: 6 Pack Style: XL Dog only
This isnone of the best flea treatments i have found.
Reviewed in the United States on April 7, 2025 by addalina1
    • Works well and safely
Size: 2 Pack Style: XL Dog only
This is the only flea and tick medicine I will use on my dogs. Works very well yet doesn't affect animals with allergies and problem prone skin. I have seen no negative reactions.
Reviewed in the United States on April 22, 2025 by Just Alice
    • Flea be gone
Size: 1 Pack Style: XL Dog only
Helped a lot w fleas and had no bad reaction from dogs
Reviewed in the United States on April 2, 2025 by Amazon Customer
    • Flea death commeth!
Size: 2 Pack Style: XL Dog only
Dealing with a flea problem and this was recommended. It is definitely a walking flea killer. Our dog is 80lbs. After I apply this I see dead fleas on her bed and the ones still on her are moving at a fraction of the speed. We reapplied after 3 weeks due to her weight and this is for dogs 55lbs. Cannot let the fleas get a moment of rest. This is our first issue with fleas after a lifetime of having pets and it is a nightmare so I empathize with those going through it. I vacuum daily in the main bedroom. No pets on the bed for our sanity to have one space in the house that is for sure 100% flea free. Yard was sprayed and bought Nyguard to spray in the house. We do everything natural so it has been sad to turn to chemicals but when you become desperate you cave to what works best. I've tried essential oils and not sure how much that deters fleas. We also have a small dog and a cat. Pest guy says squirrels are main carriers for fleas so that is all we can figure out for how they got here. Or the cat that does wander at night. Also weekly baths on the dogs. The cat got a bath but he is black and I have yet to see a flea although he is always scratching. Also using homeopathy remedy so look that up. Good luck! ... show more
Reviewed in the United States on April 23, 2025 by Shalker
    • It worked 100%
Size: 1 Pack Style: XL Dog only
Worked with in a few minutes of putting it on. A day later now, my dog isn’t itching at all. Worked very well.
Reviewed in the United States on April 22, 2025 by Michael Hensley
    • "Flea Freedom: Convenient Medicine Delivered Right to Your Door!"
Size: 1 Pack Style: XL Dog only
The convenience of buying flea medicine online and having it delivered cannot be overstated. In today’s fast-paced world, pet owners are always looking for ways to save time and effort, and purchasing flea medicine online offers just that. First and foremost, the ease of browsing various products from the comfort of your own home is a significant advantage. You can compare different brands, read reviews, and choose the best product for your pet without the hassle of visiting multiple stores. This saves not only time but also the stress of navigating crowded aisles. Additionally, online retailers often provide a wider selection of flea medicines than local pet stores, including prescription options that may be harder to find. This ensures that you can find the most effective treatment tailored to your pet's specific needs. Having the flea medicine delivered directly to your door is another major benefit. This eliminates the need to carry heavy packages or make special trips to the store, making it especially convenient for busy individuals or those with mobility issues. Plus, many online retailers offer subscription services, so you can set up regular deliveries and never worry about running out of medication again. In summary, buying flea medicine online and having it delivered is a convenient and efficient solution for pet owners. It streamlines the process, provides access to a broader range of products, and saves time and effort, allowing you to focus more on enjoying time with your furry friends. ... show more
Reviewed in the United States on February 2, 2025 by I recently purchased a lingerie dress that has quickly become one of my favorites! The dress boasts a sexy look that is sure to turn heads, and it fits beautifully on various body types, making it a versatile choice for many. One of the standout features is the material, which is both soft and stretchy. It hugs my curves in all the right places without feeling restrictive, which is a huge plus. I’ve received numerous compliments on how flattering it looks! Many customers, including myself, appreciate the overall quality and value for money this dress offers. It feels luxurious without breaking the bank, which is always a win in my book. That said, I did notice that some customers have mixed opinions regarding the material quality. While I personally found it to be excellent, it's worth considering that experiences may vary based on individual preferences. Overall, I highly recommend this lingerie dress for anyone looking to add a sexy and comfortable piece to their collection!
    • Doesn't work well
Size: 4 Pack Style: XL Dog only
After reading reviews, I was super hopeful this would work. We live in a wooded area with many animals around, and even though my dogs are in a fenced yard, we do have a flea problem. I should also mention they are inside dogs and only go out to do their business. We used this product on all 4 dogs, and they still had a little bit of a flea problem. It's not as bad as before, but still noticeable. ... show more
Reviewed in the United States on February 21, 2025 by Kindle Customer

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