K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 2-Mo Supply
$18.98 – $79.98
Brand | K9 Advantix |
Item Form | Topical |
Scent | Unscented |
Item Weight | 1.13 Ounces |
Active Ingredients | Imidacloprid, Permethrin, Pyriproxyfen |
Item Volume | 8 Milliliters |
Allergen Information | Allergen-Free |
Dog Breed Size | Large |
Age Range (Description) | 7 weeks and older |
UPC | 724089060983 |
- 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 don’t have to bite your dog to die
- Easy-to-apply topical treatment is fragrance-free and waterproof after 24 hours
- No prescription needed
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.
From the manufacturer

Kills and Repels
Unlike other treatments, K9 Advantix II kills and repels fleas, ticks and mosquitoes for up to four weeks and also protects against biting flies and lice.
Same-Day Effectiveness
K9 Advantix kills fleas on dogs within 12 hours of application and prevents reinfestation.
Vet-Recommended
K9 Advantix is the leading brand in flea, tick and mosquito protection, recommended by veterinarians.
Application key benefits
Easy-to-apply topical solution – no hard-to-swallow pills
Easy Application – Step 1
Holding the tube upright and pointed away from you and your pet, remove the cap from the applicator tube. Turn the cap around, place it back on the tube and twist to break the seal.
Easy Application – Step 2
Evenly apply the entire contents of the tube along the top of the dog’s back, from the shoulder down to the base of the tail. The number of spots depends on the size and weight of the dog (please refer to the product label). At each spot, part the hair until the skin is visible. Place the tip of the tube on the skin and gently squeeze a portion of the solution on the skin.

Important information
Ingredients
Active Ingredients – % By Weight. Imidacloprid – 8.80%. Permethrin (Cis/Trans Ratio: Max 55%(+/-) CIS and min 45% (+/-) trans.
Directions
Application Instructions: 1. Use only on dogs. DO NOT USE ON CATS or other animals. 2. The dog should be standing for easy application. Evenly apply the entire contents of the K9 Advantix® II tube to four to six spots on the top of the back from the shoulder to the base of the tail. 3. At each spot, part the hair until the skin is visible. 4. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. 5. 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. 6. Do not get this product in your dog’s eyes, or allow your dog to ingest this product.
Weight | 0.070625 lbs |
---|---|
Dimensions | 1 × 4.38 × 4.75 in |
Is Discontinued By Manufacturer | No |
Product Dimensions | 1 x 4.38 x 4.75 inches; 1.13 ounces |
Manufacturer recommended age | 1 month and up |
Item model number | 86314819 |
Department | Flea & Tick |
Date First Available | January 23, 2014 |
ASIN | B00I0BWNUG |
Country of Origin | Germany |
Manufacturer | Elanco US Inc, K9 Advantix |
Size | 1 Pack, 2 Pack, 4 pack, 6 Pack |
Style | XL Dog only |
7 reviews for K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 2-Mo Supply
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AMIE B. –
I have bought this product numerous times for my large dog. He weighs 75lbs and this product works great. I have not found a flea on him since beginning the use of this flea control. It doesn’t have a noticeable smell, easy to apply and seems to last the full amount of time as advertised.
addalina1 –
This isnone of the best flea treatments i have found.
Josue andrade –
I applied it to my dog and it does 100% of its job, protecting him very well.
Amazon Customer –
Helped a lot w fleas and had no bad reaction from dogs
Online shopper –
WORKS!!! my GSD had fleas from the day we bought him. Tried so many remedies, drops, pills, baths, sprays. I was really discouraged and didn’t expect these to be any better. But wonderful surprise they work!! He no longer nibbles at his legs all day scratching in bw bites. I see him occasionally nibble but nothing concerning. Hooray 🎉
Anonymous –
Works very well to keep ticks and fleas off our dog. Have purchased for several years now. For dogs only. only kind of flea and tick meds we use
Kindle Customer –
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.