K9 ADVANTIX II Flea & Tick Spot Treatment for Dogs, 11-20 lbs, 6 Doses (6-mos. supply) - Chewy.com

K9 Advantix II Flea & Tick Spot Treatment for Dogs, 11-20 lbs

By K9 Advantix II
Rated 4.1524 out of 5 stars

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About This Item

Details

  • Broad-spectrum, veterinarian-recommended treatment repels and kills fleas, ticks and mosquitoes on dogs 7 weeks or older and weighing 11-20 pounds.
  • Begins working within 12 hours and kills pests on contact.
  • Kills all life stages of fleas to prevent re-infestation; also kills lice and even repels biting flies.
  • Waterproof formula continues working for up to four weeks, even after bathing or swimming.
  • Convenient, monthly topical application contains imidacloprid, permethrin and pyriproxyfen; available in packs of 2, 4 or 6 treatments.

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Ingredients

Instructions

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FAQ

Play Video: Learn More About K9 Advantix II From Our Team of Experts
Learn More About K9 Advantix II From Our Team of Experts

Important Information

Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.



About K9 Advantix II

Experience the Advantages of K9 Advantix II

Veterinarian-recommended K9 Advantix II kills fleas, ticks, mosquitoes and lice, and repels biting flies. Now you can help your dog fight these pesky pests through contact—no biting required. Convenient and easy to use, K9 Advantix II is for dogs and puppies 7 weeks of age or older. So help your pal get the effective protection he needs with all of the advantages of K9 Advantix II.

Why are Biting Bugs a Big Deal?

K9 Advantix II spreads over the skin and hair to kill and repel them through contact, meaning they do not have to bite to die. And if a flea, tick or mosquito is repelled, it cannot bite and transmit disease.

Why Choose K9 Advantix II?

Fleas, ticks and mosquitoes can negatively affect your pet's health. It's important to use an effective product that kills pests which can spread disease. Fleas can cause flea allergy dermatitis, an allergic reaction that can lead to constant scratching, severe itching and even hair loss. Ticks can transmit deadly diseases, such as Lyme disease and Rocky Mountain spotted fever. And mosquitoes can potentially carry dangerous diseases, too, including heartworm. K9 Advantix II should not be used in place of a heartworm disease prevention product.

Is K9 Advantix II the Right Choice for Your Dog?

Whether your dog is a winter snow hound or a summer backyard explorer, an sunseeker or an outdoor enthusiast, choose K9 Advantix II to help keep fleas, ticks and mosquitoes from interrupting his favorite activities year-round. If you want to return the love to your dog, take care of him with flea prevention that works to kill the fleas you see and the ones you don't.

K9 Advantix II Has a Treatment for Dogs Large and Small

K9 ADVANTIX II FLEA & TICK TREATMENT FOR SMALL DOGS

4-10 pounds

K9 ADVANTIX II FLEA & TICK TREATMENT FOR MEDIUM DOGS

11-20 pounds

K9 ADVANTIX II FLEA & TICK TREATMENT FOR LARGE DOGS

21-55 pounds

K9 ADVANTIX II FLEA & TICK TREATMENT FOR EXTRA LARGE DOGS

55 pounds and over

Do not use K9 Advantix II on cats.

About K9 Advantix II

K9 Advantix II is manufactured by Bayer, a leading name in the healthcare industry for over 150 years. K9 Advantix II is a monthly flea, tick and mosquito treatment for your dog that kills through contact—no biting required. It starts working to kill fleas within 12 hours of application and is veterinarian recommended, so you can feel confident knowing that your pet is getting effective protection.
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Questions & Answers

24 Customer Questions


I see a lot of reviews for fleas but I have a trouble with ticks. How good is this at preventing and killing ticks?
Answer by ChewyMar 13, 2018
This product repels and kills ticks including Deer ticks, American dog ticks, Brown dog ticks, and Lone Star ticks for up to 4 weeks.

What's the expiration date? I can't find it on the box?
Answer by ChewyMar 19, 2018
This product does not have an expiration date. It will be safe to use as long as you store unused containers in their original packaging and at room temperature.

does it kill the eggs and mosquitos
Answer by ChewyMar 25, 2018
The Treatment kill fleas of all stages and also repels and kills mosquitoes.

Can this product be used at the same time as heartworn medications
Answer by ChewyOct 23, 2017
We'd recommend speaking with your veternarian before applying this treatment while using heartworm medication.


ReviewsWrite a Review

4.2
Rated 4.1524 out of 5 stars
912 Reviews
83%
Would recommend to a friend
1
15.2412
15%
2
3.5088
4%
3
3.6184
4%
4
6.0307
6%
5
71.6009
72%

912 Customer Reviews


Filter by reviews that mention

Rated 1 out of 5 stars
By KellyJo on Dec 23, 2022

Bad reaction

We have a 14 lb mini poodle / Jack Russell mix. We've always got the Revolution, or the Selerid flea tick heartworm but she had a shot for heartworm so my vet said to order any flea/tick topical for her. The treatment the vet had was around $133.00. I saw the price of the K9 Advantix and ordered it. For some reason they didn't have to send order to get the vet to approve it. I applied the treatment last week; followed directions on the box. She had a horrible reaction later that night. Vomitted her dinner and was going nuts and could tell the 3 places where I put the treatments were irritating her skin. Since then she has not been able to keep any food down. Every meal she has vomitted and she still reaching toward her backside where I placed treatment. I called the vet and then called the # on back of box of the manufacturer. They suggested we wash the area. We have done that twice and this hasn't helped. Whatever is in the K9 Advantix is way to potent for her and just wanted to warn others about that. We are going to reach out to her vet again today since she hasn't eaten in 4 days. Lesson learned; will stick w/ what I know and not try to save a dollar.


Rated 5 out of 5 stars
By DiJeff on Nov 23, 2022

Good stuff!!

I have used this flea treatment for years and it has always worked for us. I have noticed no adverse reaction and do not use flea shampoo or other flea products. We live on 5 acres and our dogs come in/out as they please. I like that you don't need any type of RX from the vet. Chewy has good incentives to purchase from them throughout the year!


Rated 1 out of 5 stars
By JohnyG on Nov 18, 2022

Would give it 0 stars or less.

Compared to the small bit of searching our dog did from the few fleas we found. ADVANTIX 2 tortured him. His skin turned raw and so far foe over 24 hours he is suffering. The vet said to wash it off of him and give him Benadryl which has only given him a little relief and they said if it continues tomorrow to bring him in for a huge vet bill I'm sure Do not make the same mistake!! Andvatix 2 has been a nightmare.


Rated 1 out of 5 stars
By Rick on Nov 15, 2022

doesn’t seem the same , and and 1 empty vile

used this a long time ago & it worked great recently bought again for my 3 shih tzus for a small flea problem, not even an infestation & it doesn’t seem too work, also i opened the package & applied it on 2 of my dogs then got to the third & opened the bottle & there was literally nothing inside no liquid, probably best to get vet flea perscription


Rated 4 out of 5 stars
By Isabelle on Dec 9, 2022

Worked at first

This seemed to work the first couple days, then it lost the effectiveness. I found live flea on my dog within a week and a half of the application.


Rated 1 out of 5 stars
By Marlene on Oct 18, 2022

K9 ADVANTIX 2

i HAVE BEEN USING THIS PRODUCT ON MY 11YR OLD SHIH TZU FOR 11 YEARS WITH NO PROBLEMS. PURCHASED HERE IN JULY. USED IT AUG AND SEPT. WHEN I TOOK MY DOG IN FOR HIS WELLNESS EXAM, HE HAD LYME DISEASE AND FLEAS. AFRAID THIS PRODUCT WAS EXPIRED WHEN IT WAS SOLD TO ME. DO NOT BUY IT


Rated 5 out of 5 stars
By FuzzWuzz on Nov 8, 2022

Works very well

We've used K9 Advantix for 3 years and have seen zero ticks and zero fleas. It is also well tolerated by our dog who looks forward to getting it since he receives his heart worm medication as a treat afterward.


Rated 1 out of 5 stars
By JJJC on Jan 16, 2023

Waste of $$$

This is the first and last time I will buy this product. Has not helped our puppy with fleas!


Rated 4 out of 5 stars
By Betsy on Aug 26, 2022

No more fleas

We have noticed fleas on our Boston terrier, I treated the yard and home and she still had some fleas, I checked the K9 Advantix flea and tick spot treatment and it seemed to be the right choice, I applied the K9 Advantix in 3 areas as recommended, we are now on the 3rd week and no fleas, you apply the K9 Advantix every 30 days, it works great and our Boston terrier had no side effects


Rated 5 out of 5 stars
By Tutty1 on Sep 30, 2022

Best place for pets

I love chewy. Best service, best products, best employees. I am 80 yrs. I could not take care of my dog without chewy. I adore chewy they are so thoughtful .