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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

Advantix is one of the most trusted names in flea and tick protection, and for good reason! K9 Advantix II is an easy to use and effective product, beginning to work within 12 hours and lasting for 30 days. [+]

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Rated 4.5 out of 5 by 532 reviewers.
Rated 1 out of 5 by Warning Don't Use This Product Okay, this is a shout out to anyone with a puppy or dog. Today my nine month old puppy went for his grooming, but because we had found a tick on him, we decided to apply a dose of K9 Advantix II. We used the appropriate dose for his weight and age. I did my footwork first. I read the possible, but extremely rare, posted adverse reactions posted by Bayer online and compared them to other products. He came home extremely lethargic, which at first I attributed to his grooming trauma. But then he began to hide and cower, next came the scratching at the application site, followed by agitation and then weird eye movements, along with confusion. Of course, several hours had passed by then. I read online to wash the sight with dawn dishwashing liquid, which we did. However, after reading that the posted possible side effects were not even a shadowing of those that other pet owners blogged about, ranging from skin irritation, to permanent mental disorder to death, we decided to get him help. At midnight, we found ourselves sitting at the all night, emergency vet, hoping for the best, but fearing the worst for our puppy. The vet informed us that some dogs have adverse reactions, but usually recover within 48 hrs. He advised us of the possible symptoms to continue to monitor our puppy for, and encouraged us to keep him quiet and with rest and TLC we should anticipate a full recovery. Day two found him in much the same shape. He has slept almost all day, clinging to me, or burrowing into some corner or closet and hiding. Again only hand feeding worked, and he only made it for a 1/2 block walk before laying down and needing to be carried home. He returned to sleep for the rest of the night., but he did show some small improvement when he woke up around 11:00 p.m. The moral of this story is DO NOT USE THIS PRODUCT! Bayer has not disclosed the real dangers or true possible reactions. 06/19/2016
Rated 5 out of 5 by Easy to use We have used K9 Advantix II for Dogs for years and we highly recommend it, our pets have not had any problems with fleas or ticks. 05/23/2016
Rated 5 out of 5 by We used to have a tick problem We live in a nature area with lots of trees, mulch, bushes, etc. and several times, we found ticks on our cocker spaniel until we started using K-9 Advantix II. Now, "There ain't no bugs on me", is the song we're singing. Also, in checking on side effects, this product seems to have less issues. 05/21/2016
Rated 1 out of 5 by Not very effective this season Last year we didn't seem to have a problem, but for some reason this year, we are getting A LOT of ticks, even 5 days after application. I don't know if it is a bad batch and maybe a particularly bad tick year, but we are going to keep trying and see if it was just a fluke. I did add a collar on for added protection, so that will confound my results, but don't want to take risks with my baby! 05/16/2016
Rated 4 out of 5 by it do what it supposed to do. Works great. been using it or 15 yrs and it has always done great. 05/02/2016
Rated 5 out of 5 by This product covers fleas ticks and mosquitos... As a first line of defense for my small dogs..I prefer this product over most others. The pricing, packaging and quick delivery makes it easy to be a loyal customer.. 05/02/2016
Rated 1 out of 5 by 2 weeks later, still scratching, no dead ticks Absolutely ineffective. My dog got chewing lice and this made no change whatsoever in treating them. In addition, it definitely does not kill ticks. Poisoned my dog with this stuff and didn't even result in what was promised. 05/01/2016
Rated 5 out of 5 by I've used Advantix for many years and will continue to do so. My Veterinarian recommends this product, so I will continue to use it for my dog as long as the Doctor thinks it appropriate. We live in a tick-infested area with lots of woods and fields with tall grasses. It is therefore necessary that we use a flea/tick preventative for our dog. I have used various collars in the past and other "liquid" products for my dogs but Advantix seems to be the best one on the market to date. 05/01/2016
Bayer Flea & Tick K9 Advantix II for Dogs Advantix is one of the most trusted names in flea and tick protection, and for good reason! K9 Advantix II is an easy to use and effective product, beginning to work within 12 hours and lasting for 30 days. 60.29 Condition: new In stock! Order now!
K9 Advantix II for Dogs 4 out of 5 0 based on 532 ratings.

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