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K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 6-Mo Supply

4.5 4.5 out of 5 stars 42,442 ratings

To see product details, add this item to your cart. You can always remove it later.
6 Pack
XL Dog only

Purchase options and add-ons


About this item

  • 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

Customer ratings by feature

Easy to use
4.2 4.2
Water resistance
3.9 3.9
Comfort
3.5 3.5
Value for money
3.5 3.5

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K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 6-Mo Supply
K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 6-Mo Supply
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Price-12% $79.98
List:$91.18
$31.98$54.99$14.99-10% $51.98
List:$57.58
-17% $65.99
List:$79.27
Delivery
Get it as soon as Wednesday, Mar 13
Get it Mar 14 - 15
Get it Mar 14 - 15
Get it as soon as Wednesday, Mar 13
Get it as soon as Wednesday, Mar 13
Customer Ratings
Easy to use
4.2
4.5
4.5
4.6
4.3
4.4
Value for money
3.5
3.3
4.0
3.6
3.7
3.9
Longevity
3.4
4.0
4.1
Sold By
Amazon.com
EntirelyPets
Pets Go Here - Pet Store
kingmo Pet
Amazon.com
EntirelyPets
target audience
Dog
Dog
Cat, Cat, Cat, Cat, Cat
age range
7 weeks and older
Puppy
Extra Large Dogs
All Life Stages
8 weeks and older
All ages
form
Topical
Drops
Drops
Drops
Topical
Drops
volume
24 milliliters
8 milliliters
3.2 milliliters
24 milliliters
active ingredients
Imidacloprid, Permethrin, Pyriproxyfen
Fipronil 9.8%, (S)-methoprene 8.8%, OTHER INGREDIENTS 81.4%, TOTAL 100.0%
Imidacloprid, Pyriproxyfen
weight
0.1 pounds
0.07 pounds
0.1 pounds
0.05 pounds
0.15 pounds

From the manufacturer

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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.

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image image image image image
K9 Advantix II Extra Large Dog Seresto Large Dog Advantage II Extra Large Dog advantus Advantage Treatment Shampoo
Form Topical Drops Collar Topical Drops Flea Soft Chew Tick and Flea Shampoo
Treatment or Prevention Treatment + Prevention Treatment + Prevention Treatment + Prevention Treatment Treatment
Application Frequency Monthly Every 8 Months Monthly Do Not Exceed One Soft Chew in a 24-hour Period See Product Label
Kills Fleas?
Kills Ticks?
Kills Mosquitos?
Kills Lice?
Starts to Kill Fleas Within 12 hours 24 hours 12 hours 1 hour On Contact

Product guides and documents

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 7.75 x 1 x 4.25 inches; 2.4 ounces
  • Manufacturer recommended age ‏ : ‎ 1 month and up
  • Item model number ‏ : ‎ 81520429
  • Department ‏ : ‎ Flea & Tick
  • Date First Available ‏ : ‎ March 20, 2007
  • Manufacturer ‏ : ‎ Elanco US Inc
  • ASIN ‏ : ‎ B004QRJJ0K
  • Country of Origin ‏ : ‎ Germany
  • Customer Reviews:
    4.5 4.5 out of 5 stars 42,442 ratings

Looking for specific info?

Product 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.

Top Brand: K9 advantix

Highly Rated
4.5/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Important information

Ingredients

Imidacloprid 8.80% Permethrin* 44.00% Pyriproxyfen 0.44% Other Ingredients 46.76%

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.

Legal Disclaimer

We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product

To report an issue with this product or seller, click here.

Customer reviews

4.5 out of 5 stars
4.5 out of 5
42,442 global ratings

Customers say

Customers are happy with the safety and effectiveness of the pet supplies. They mention that it has no adverse effects on their dogs and that it works great to kill fleas. They are also happy with delivery, and ease of application. However, some customers disagree on durability, value, effect on skin, and quality.

AI-generated from the text of customer reviews

1,101 customers mention806 positive295 negative

Customers like the effect on flea. They say that it continuously prevents fleas and ticks, and completely eradicates all flea and mites within a week. Some customers also like that it repels and kills mosquitoes.

"...I am thrilled with this stuff no more fleas. My dog is happy again. We ended up infested with fleas...." Read more

"This product works well as a preventative...." Read more

"...of times I've used this on my dogs, they seemed to have fleas within a few days...what's up with that?" Read more

"...I did notice that the cats seem to be less itchy with less evidence of fleas. This does not have a strong odor." Read more

213 customers mention161 positive52 negative

Customers like the safety of the pet supplies. They say that it has no adverse effects on their dogs, and they haven't experienced any health issues. The product is dependable and has been safe for their dogs.

"...She had no bad reactions whatsoever and it completely eradicated all her fleas and mites within a week." Read more

"...They've had no adverse effects from the ingredients (ages 10 weeks, 3 years, and 6 years old). I will buy again." Read more

"Worked as it should and kept my dog happy" Read more

"...This product has many warnings that it contains dangerous chemicals. Why did I get a package that was deliberately opened?..." Read more

198 customers mention189 positive9 negative

Customers find the application of the pet supplies to be easy. They mention that the product is easy to use and that it is easy for their pets to apply a few dots between their shoulder blades and up. They are satisfied with the results and the ease of treatment.

"...Finally a product that does what they say it does. So easy to put on a few dots from shoulder blades to tail...." Read more

"This is very easily applied to my dog and it works...." Read more

"...Fleas were completely gone after a day and a half. Easy to apply drops that kill fleas on your pet and those that are hatching in the house...." Read more

"...I applied the product according to the easy to understand instructions, and within 12 hours there are next to no fleas on either dog...." Read more

129 customers mention125 positive4 negative

Customers are satisfied with the delivery of the pet supplies. They mention that the delivery was ever so speedy, it was easy to order, and the packaging was in great condition. Some customers also mention that they are able to save by subscribing to Amazon.

"Works as advertised. Great packaging. And easy to open. No problem getting my dogs to eat it." Read more

"This is my favorite treatment for my dog. Works well, easy to order." Read more

"It works, came quick. Keeps fleas and ticks off my dogs." Read more

"Packaging great and easy to use. Now we’ll see how well it works." Read more

2,074 customers mention1,407 positive667 negative

Customers are mixed about the quality of the pet supplies. Some mention that it works well enough to kill the living fleas like it stated, while others say that it's not working 100% as one would expect, and that it didn't work on the flea.

"...However, this is an amazing product, and I recommend it highly." Read more

"This product work good for my dogs. Great value." Read more

"Was using Activate II, it suddenly stopped working...." Read more

"Good product" Read more

677 customers mention462 positive215 negative

Customers have mixed opinions about the value of the pet supplies. Some say the price is worth it, while others say it's relatively expensive and a total waste of money.

"...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...." Read more

"This product work good for my dogs. Great value." Read more

"...Now it is a little expensive especially if you have 8 dogs like me. But it is a lot cheaper than at the vet and it works just as well. In my opinion...." Read more

"...All in all, for the quickness of delivery and the price this was an acceptable product." Read more

299 customers mention125 positive174 negative

Customers are mixed about the effect of the pet supplies on their skin. Some mention that it worked great on their dog, causing no more itching or scratching. Others say that it irritates their dog's skin and makes them itch with no bugs present. However, some customers also mention that their toy eskimos had skin problems where it was applied.

"...does seem to have gotten rid of the fleas... Although he is still itching quite a bit...." Read more

"...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...." Read more

"...Only lasted two weeks and she was itching and scratching...." Read more

"...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." Read more

115 customers mention44 positive71 negative

Customers are mixed about the durability of the pet supplies. Some mention it's long-lasting, reliable, and stays effective for a good month. However, others say that it starts wearing off after about 3 weeks and became brittle.

"...Ticks are very rugged and if they can latch on to any part of a dog, they will. The product does not make them release upon biting...." Read more

"...She is 98 pounds and i would apply evenly as I could. So far always lasts long enough in between baths for the dog which i do about 3 to 4 months..." Read more

"Works okay. But it used work for 3 months 🙂. Now it’s monthly application 😳. Seems like the company has gotten GREEDY like so many other 😞..." Read more

"...This wasn't the most effective product ever -- seemed to wear off after about three weeks." Read more

Flea killer dog not included
5 Stars
Flea killer dog not included
Well he's a happy camper, not sure how you're supposed to rate something you can't experience.From an observer standpoint, he's happy, he's not scratching his butt off anymore and in general he's a happy old man, dog not included
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