Elanco K9 Advantix II Liquid Dog Flea Drops Imidacloprid/Permethrin/Pyriproxyfen - 0.34 oz
$95.15 reg $95.16
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Guests are saying
This flea and tick treatment for large dogs is highly praised for its ease of application and effectiveness. Guests appreciate the pleasant scent and the fact that it does not leave a sticky residue. Many have noted significant improvements in their dogs' comfort levels, with reduced scratching and no adverse reactions. The product is designed for monthly use, making it a convenient choice for pet owners looking to protect their furry friends from pests.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.7 out of 5 stars with 67 reviews
5 out of 5 stars
29 May, 2026
originally posted on influenster.com
Best flea and tick prevention
I love this product, it’s very easy to use. My dogs are outside most of the time on they play time and daily walks and they are always clean and protected. I doesn’t irritate my dog’s skin, I think it’s fabulous.
2 out of 5 stars
14 May, 2026
originally posted on influenster.com
Not very effective if you see fleas on your dog.
[This review was collected as part of a promotion.] I was not too impressed with the effectiveness of the product. I had seen a few fleas on my dog and I couldn’t tell that the product helped much if any with removal, so duration and durability was not very good. I couldn’t tell that it had any scent. Application was very simple.
5 out of 5 stars
5 May, 2026
originally posted on influenster.com
Great product when used as directed
The tip applicator makes it easy to get in between my shepards thick coat. Since it’s in individual packages you done have to dose anything out. My dog hasn’t had any issues with fleas or tickets when this is administered on schedule.
4 out of 5 stars
20 April, 2026
originally posted on influenster.com
Perfect for large dogs
[This review was collected as part of a promotion.] Love that I have an option to protect my large dog from fleas and ticks. The fleas and ticks have been getting worse each year with the warmer winters due to climate change. Have to protect the pups!
5 out of 5 stars
16 April, 2026
originally posted on influenster.com
Easy application
[This review was collected as part of a promotion.] Easy to apply with the squeeze bottle. No weird texture or smell when applying. My dog didn’t even notice me put it on her. Didn’t make a mess or anything!
4 out of 5 stars
15 April, 2026
originally posted on influenster.com
Good but pricey
[This review was collected as part of a promotion.] The only reason I didn’t give this 5 stars is because of the price of I had bought it myself. It is very easy to use and convenient. I think it works well, but the price would be a deterrent for me.
5 out of 5 stars
15 April, 2026
originally posted on influenster.com
Works well and is safe
[This review was collected as part of a promotion.] Spring came early this year and we had tons of parasites in my area. This is an amazing job keeping my dog safe would highly recommend. I reached out to my vet and she also recommends this product.
5 out of 5 stars
15 April, 2026
originally posted on influenster.com
Easy and Necessary
[This review was collected as part of a promotion.] This product works really well for my 55 pound dog. Ticks are a huge problem where we live so this product is really important to maintaining her health!
5 out of 5 stars
14 April, 2026
originally posted on influenster.com
Love this product
[This review was collected as part of a promotion.] Love this product. It’s the one we have used for all of our dogs. It’s effective and there’s no odor. It’s easy to use and lasts the 4 weeks it says. Definitely worth the cost.
5 out of 5 stars
13 April, 2026
originally posted on influenster.com
Easy to use
[This review was collected as part of a promotion.] Our sweet golden-doodle gets fleas very easily because of her long hair. This couldn’t have arrived at a better time and I’m shocked how her itching has stopped!! This was very easy to use and apply. My dog actually sat down for the application as well almost like it was soothing for her. I will definitely be keeping this on hand!
5 out of 5 stars
12 April, 2026
originally posted on influenster.com
Great for outdoor dogs easy to apply and effective
[This review was collected as part of a promotion.] I wasn’t sure what to expect since our dog doesn’t currently have fleas or ticks, but I used it mainly for mosquito prevention. We have a 1 year old pitbull who loves being outdoor and this product has worked great for that purpose. It’s easy to apply and doesn’t leave any sticky or greasy residue on her coat. Overall, I’m really pleased with the results and would definitely recommend it to other dog parents looking for reliable protection while their dogs enjoy the outdoors.
5 out of 5 stars
9 April, 2026
originally posted on influenster.com
1 month of no fleas, ticks or mosquitos
[This review was collected as part of a promotion.] I have used the K9 Advantix II for large dogs on my 40lb pitbull and so far no fleas. This contains 1 vial which is good for 1 month. It's very easy to apply as all you have to do is you just open up the vile and apply down the back starting from the neck down so they are not able to lick it off. It also repels mosquitos and ticks which is good since we like to camp and bring our dog with and the campgrounds you have to worry about them.
5 out of 5 stars
8 April, 2026
originally posted on influenster.com
Great!
[This review was collected as part of a promotion.] My wife and I love this! We have been putting this product on our dogs for years and are very happy with the results! It’s easy to apply and only requires application once a month!
3 out of 5 stars
8 April, 2026
originally posted on influenster.com
It could be a better product but it works
[This review was collected as part of a promotion.] Ive used K9 advantix before in the past and it seems to work well for a week max. After a week goes by I start to notice active fleas on my dogs fur. I wish it would work alot better like described, because for the price of a monthly dosage is pretty expensive.
5 out of 5 stars
7 April, 2026
originally posted on influenster.com
Easy to apply
[This review was collected as part of a promotion.] Easy product to apply. I think my dog needed two people to apply this product as she wouldn’t stand for me. The dosage is pre measured in small tubes with a narrow tip for application. It lasts for one month. Setting a reminder on your phone can help applying the dose on time. My big girl didn’t seem to mind having the product applied. She didn’t act like the product bothered her in any way.
4 out of 5 stars
6 April, 2026
originally posted on influenster.com
Easy, clean, and effective
[This review was collected as part of a promotion.] I love this prevention!! The only thing I would change would be application as multiple pets can lick it off of each other. Easy to follow instructions and little to no residue is left
5 out of 5 stars
6 April, 2026
originally posted on influenster.com
Effective
[This review was collected as part of a promotion.] It is very effective in preventing fleas. I like that it's an easy application and it does not leave residue. The only thing that I've notice with my dog is that she scratches alot (she does not have fleas). I don't know if it's this medication.
5 out of 5 stars
30 March, 2026
originally posted on influenster.com
Just as advertised!
[This review was collected as part of a promotion.] The K9 Advantix II for large dogs did just as advertised. Our dog loves playing in the woods in our back yard and we used to find ticks on her every few days we would have to pick off. Since we have treated her with K9 Advantix II we no longer find any. There is no rough scent to deal with and so far it has lasted several weeks. The instructions were a little unclear but other than that it was great!
5 out of 5 stars
28 March, 2026
originally posted on influenster.com
Works great
[This review was collected as part of a promotion.] The instructions are very clear and simple. It states the dosages very clearly for you to read and understand. My dog didn’t have any kind of reactions. It worked very good a pretty quickly. My dog hasn’t had any issues with any flea or insect since applying it on her.
5 out of 5 stars
23 March, 2026
originally posted on influenster.com
Simple to use, long lasting
[This review was collected as part of a promotion.] Ticks are out early so It’s spring maintenance time. Application was simply, love that it has a pleasant scent and last for the entire 30 day duration .