At a Glance
8 month protection
Kills and repels fleas and ticks
For use on dogs and puppies 7 weeks and older
Easy, fast-acting, long-lasting, and odorless
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    K9 Advantix II for Dogs
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Rated 4 out of 5 by 1736 reviewers.

  • Best **** Flea & Tick Collar
    I love these collars, they work phenomanlly and I plan on using them as our main flea & tick prevention for years to come. by on 02/28/2019
  • suresto
    works great. my three German shepherds have no fleas for 8 months when they wear the surest flea collar. by on 02/16/2019
  • Great for a few Months but fades
    I have purchases Seresto Collars twice.I was so excited that it eliminated all the fleas. At first it was very effective, but after a few months, they were back. It does not last 8 months, more like 3-4. My vet said fleas were bad this season. I contacted Bayer and the support team is great. They sent me complimentary 3 month paks of Advantage which worked for a few weeks then needed to be reapplied. The 2nd time I ordered again, it lasted about 3 months. I contacted Bayer again. They apologized and sent me Advantix this time. For the price, it is not bad for 3 months of flea protection. I followed all the directions provided by both the labels and the Bayer rep. It just isn't as effective for as long as stated. But, for my dog who can't take flea meds (He'll have seizures), it is one of the best alternatives. I gave it 2* for effectiveness because it did not last as long as stated. I would give it a 2-1/2. by on 11/15/2018
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