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Comfortis Flea Preventative

Product Reviews

Comfortis is the first beef-flavored chewable that both kills fleas and prevents infestations in your dog or cat for a full 30 days. This product is safe for puppies and kittens as young as 14 weeks. More »

$98.59 - $117.59
Available Options:
  • Dogs - 5-10 lbs. or Cats - 4-6 lbs., 6 months supply Add to Cart
  • Dogs - 10-20 lbs. or Cats - 6-12 lbs., 6 months supply Add to Cart
  • Dogs - 20-40 lbs. or Cats - 12-24 lbs., 6 months supply Add to Cart
  • Dogs - 40-60 lbs., 6 months supply Add to Cart
  • Dogs - 60-120 lbs., 6 months supply Add to Cart
  • Dogs - 3-5 lbs. or Small Cats, 2-4 lbs., 6 months supply Add to Cart
Rated 4.8 out of 5 by 205 reviewers.
Rated 5 out of 5 by The product has always been an ecffective one.. good product ... has always worked for my dogs..I wish it was a chewable pill rather than a hard pill September 10, 2014
Rated 5 out of 5 by Doesn't poison your other pets I asked the vet to recommend something for my cats that wasn't applied to their fur because they washed topical flea meds off each other. Comfortis fills the bill. Sometimes they will chew it, other times I have to pill them. September 4, 2014
Rated 1 out of 5 by Useless! I gave Comfortis to my two cats days ago. They are still scratching. With its high price tag Comfortis seems to be absolutely useless. Makes me wonder if the positive reviewers were paid. Oh how I miss the original Advantage - fleas were gone almost instantly. Any suggestion of what works to get rid of fleas would be appreciated. August 31, 2014
Rated 5 out of 5 by Works great. This product is a little pricy but it was the only thing I could use to keep fleas off. My dog was being eaten alive with them. Within two days after first using Comfortis, I could not find any fleas. August 26, 2014
Rated 5 out of 5 by Love this product! I have been using this product over a year now and just love it! No more dealing with putting drops on Jake and it not working. Since he has been on Comfortis, he has not had a flea. I will continue using this product. Yes it is a little pricey, but it works and that is all I care. August 20, 2014
Rated 5 out of 5 by Awesome! Best thing ever created! Fleas started freaking out within minutes. Hopefully it continually works this well month after month. August 7, 2014
Rated 5 out of 5 by The BEST flea med After trying everything, I will stick with Comfortis. THE BEST. I give it once every 6 weeks with a dab of peanut butter. It is the only flea killer that works even if you bathe your dog. You don't have to worry about the greasy mess on their back or the burn and bald spots that the topical stuff causes. August 1, 2014
Rated 5 out of 5 by It works wonders! Both our large dogs had been covered (think hundreds) in fleas for weeks no matter how many times we sprayed, bathed and dosed them with topical preventitives. Within 4 hours, the fleas were super active; by 16 hours, they were gone. We've only seen a handful since then and it's been a month. Hooray! July 27, 2014
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