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K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 4-Mo Supply

  • Based on 42,463 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 21
Order within 11 hours and 25 minutes
Available payment plans shown during checkout

Size: 4 Pack


Style: XL Dog only


Features

  • 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. Fleas, ticks, mosquitoes and other pests not only cause discomfort; they may also transmit disease. Monthly use of K9 Advantix II is important to protect your dog against fleas that may cause transmission of tapeworms. This formula also kills fleas which may cause Flea Allergy Dermatitis and flea bite anemia. That’s why K9 Advantix II Extra Large Dog topical, spot-on formula makes application simple - going on in seconds. It's easier than a flea collar and there are no hard-to-swallow pills. You’ll also love that K9 Advantix II is fragrance-free and waterproof after 24 hours of application. Check the product label for information on application and potential side effects. K9 Advantix II pest protection is effective on both indoor and outdoor dogs. Your dog should be at least 7 weeks old and weigh over 55 lbs. to use K9 Advantix II Extra Large Dog. For the ultimate convenience in care, K9 Advantix II is available over the counter – no prescription needed. And, you can stock up with 2-dose, 4-dose and 6-dose packs so you never miss a monthly treatment. Once K9 Advantix II is applied, your dog is ready to get right back to big-pup cuddles and racing around the park. K9 Advantix II Extra Large Dog is a trademark of Elanco or its affiliates.

Brand: K9 advantix


Item Form: Topical


Scent: Unscented


Age Range (Description): 7 weeks and older


Item Weight: 2.08 ounces


Active Ingredients: Imidacloprid, Permethrin, Pyriproxyfen


Item Volume: 16 Milliliters


Target Species: Dog


Allergen Information: Allergen-Free


Dog Breed Size: Large


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 7.75 x 1 x 4.25 inches; 2.08 ounces


Item model number ‏ : ‎ 86315017


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ October 5, 2004


Manufacturer ‏ : ‎ Elanco US Inc


Country of Origin ‏ : ‎ Germany


Best Sellers Rank: #181 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Dog Flea Drops


#2 in Dog Flea Drops:


Frequently asked questions

No, the K9 Advantix II XL is intended specifically for dogs over 55 pounds. Using it on a smaller dog may result in an overdose, as the doses are tailored to the weight of the dog.

Yes, the K9 Advantix II remains effective after bathing, water immersion, or exposure to sunlight.

This product is designed for monthly use. Just one application per month provides multi-stage flea, tick, and mosquito protection. Overdosing can be harmful to your pet.

Some dogs may experience temporary irritation at the application site. If signs persist or become severe within a few days of application, consult your veterinarian immediately.

Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.


These reviews overwhelmingly suggest a positive customer experience with K9 Advantix II flea and tick medication. It's praised for relieving dogs of itching and discomfort caused by pesky intruders such as fleas, ticks, biting flies, and mosquitos. Users report that the product is reliable and effective across different dog breeds and sizes, providing quick relief and consistent results. Some reviewers express their loyalty to this brand, stating it outperforms its competitors.

Pros

  • 🐾 Highly effective against a range of parasites like fleas, ticks, mosquitoes, and biting flies
  • 🐕 Works consistently across different dog breeds and sizes
  • 💪 Trusted by loyal users as a superior product compared to competitors
  • 🚀 Provides quick relief from discomfort caused by bug bites

Cons

  • 💸 A bit on the expensive side, especially for larger packs
  • 📦 Concerns about packaging, with one customer reporting receiving an opened box

Should I Buy It?

Absolutely. Considering the high effectiveness, reliable results, and customer loyalty towards the product, purchasing K9 Advantix II appears to be a wise investment for your dog's health and comfort. Just keep in mind, it's slightly pricier than some other options on the market.


  • IT works fast
Size: 1 Pack Style: XL Dog only
I just put it on my dog for the second time. I am thrilled with this stuff no more fleas. My dog is happy again. We ended up infested with fleas. My poor dog had bites all over his body, especially his rear end. He was going crazy and crying all the time I was trying everything on him, but I knew we had to get rid of the fleas. I tried for other products, not cheap and not good. Finally a product that does what they say it does. So easy to put on a few dots from shoulder blades to tail. My dog had no problems with it going on and evidently it doesn’t sting or anything because he was fine. The fleas are gone. It wasn’t just on him. FYI we have several indoor cats, who also ended up with them including babies. Fleas can be so hard to get rid of Buy this now if you don’t have them in your house. My dog is 80 pounds but I’ll tell you the price is worth it. I still have marks from getting bitten by the fleas. Oh yeah, they eat everything including us. ... show more
Reviewed in the United States on February 6, 2024 by HisLioness

  • Works well as preventative
Size: 6 Pack Style: XL Dog only
This product works well as a preventative. However, if you want to get rid of a flea infestation, I recommend getting from your vet as the efficacy of the product is higher because the vets get it straight from the manufacturer whereas this is not straight from the manufacture, it is from a reseller. However, this is an amazing product, and I recommend it highly. ... show more
Reviewed in the United States on February 9, 2024 by Meghan

  • Needed in a pinch!
Size: 1 Pack Style: XL Dog only
Was using Activate II, it suddenly stopped working. Whether is was a bad batch, fleas got resistant to the stuff, IDK... all I know is my flea allergy guy got fleas which isn't a good thing! Tried going with another cheaper flea medication (generic frontline plus equivalent) which triggered an ataxic episode (long story short DONT GIVE SYMPARICA TO ANY DOG... IF YOU LOVE IT, JUST DONT DO IT!) Anyway, had to wash the stuff off pronto and get some Advantix ordered STAT. As soon as it arrived, we put it on him, and ALL is well with the world again. My GSD is once again Flea free, Ataxia free, and a BIG Happy Boy! Rainbows, Butterflies, Fields of Daisies and the whole nine yards! ... show more
Reviewed in the United States on September 12, 2023 by Terra Loden

  • Works well, but...
Size: 2 Pack Style: XL Dog only
With five cats, an infestation from every family we share walls with, our babies ended up with tapeworms. Killing the fleas is the first priority since our dog had chewed off most of her under hair. This was very helpful to be able to use every week until it was under control.
Reviewed in the United States on February 19, 2024 by Brenda

  • It worked!
Size: 4 Pack Style: XL Dog only
I was nervous about purchasing a medication like this online. I've seen several different reviews about potential side effects other dogs have had. I can say that my dog was 100% great and it got rid of the fleas that she somehow got during winter! I recommend this medication, just make sure to follow weight size and read through the directions. ... show more
Reviewed in the United States on February 26, 2024 by Emberly

  • Great product
Size: 2 Pack Style: XL Dog only
This product work good for my dogs. Great value.
Reviewed in the United States on February 24, 2024 by WAW

  • Good flea protection
Size: 1 Pack Style: XL Dog only
I purchased this topical flea treatment for my 4 fat felines, after approx 3 days after the treatment I did notice that the cats seem to be less itchy with less evidence of fleas. This does not have a strong odor.
Reviewed in the United States on February 19, 2024 by Jill B.

  • This stuff USED to work wonders...not so much these days!
Size: 4 Pack Style: XL Dog only
This stuff used to be a dynamo against fleas but the last couple of times I've used this on my dogs, they seemed to have fleas within a few days...what's up with that?
Reviewed in the United States on December 6, 2023 by Rats

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