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At a Glance
Kills fleas and ticks within 12 hours
Kills flea eggs, pupae, larvae, and adults for 30 days
Kills and protects against mosquitoes, which are the primary cause of heartworm

K9 Advantix II for Dogs

K9 Advantix II is an easy to use and effective product for flea and tick protection, beginning to work within 12 hours and lasting for 30 days. [+]

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Customer Reviews

Rated 4.1 out of 5 by 709 reviewers.
Rated 5 out of 5 by We buy it from you all of the time.......... The only problem I have ever had..........one of the tubes in this last box only had a little in it. I have used this for years and never seen this before. There was only a little drop in it.......I didn't know if I should use another one or not. I chose not too. October 26, 2014
Rated 4 out of 5 by Not for small dogs I've used this product on my bigger (over 50 lbs)dogs and had good results with no problems. It also seems to be working well for my 15 lb dog but he had a bad reaction to it- wasn't eating, lethargic, etc.for about 3-4 days. I won't be using this again on my small dog. October 23, 2014
Rated 4 out of 5 by Works great on Baby! My daughter told me that K9 Advantix II was the best flea and tick treatment....and she was right! It isn't the cheapest, but you can be sure that it will work. It's the best we've used on Baby ~ our 14 year old Rottweiler. October 9, 2014
Rated 5 out of 5 by Seems to be effective for fleas; hard to tell about mosquitoes. Have used for 2 months. Previously used Advantage II for flea control. However, switched to Advantix for protection against mosquitoes during summer. Think it helped with those, but can't be sure. Prefer Advantage II otherwise, because feel more comfortable with safety of ingredients. No adverse effects, however, with Advantix. October 1, 2014
Rated 5 out of 5 by Best product available I have tried several flea and tick medications and find that this one works the best for my dogs. Since I have been using K9, my dogs have had no fleas at all and only two ticks and they were dead ones. I just wish these medications weren't so expensive. September 29, 2014
Rated 5 out of 5 by Great product! We have three dogs and love the K9 Advantix II. We highly recommend it. It has kept our dogs flea free for years. September 29, 2014
Rated 2 out of 5 by Confusing name with K-9 advantage Ordered this by mistake needed K-9 Advantage. Not nearly as effective September 23, 2014
Rated 5 out of 5 by excelent product I have used this product for many years and it works great. September 17, 2014
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Customer Q&A

Bayer Flea & Tick K9 Advantix II for Dogs http://cdn.petcarerx.com/img/PrdImg/095x095/11357_001_m.jpg K9 Advantix II is an easy to use and effective product for flea and tick protection, beginning to work within 12 hours and lasting for 30 days. 56.89 Condition: new In stock! Order now!
K9 Advantix II for Dogs 4 out of 5 0 based on 709 ratings.