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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 200 reviewers.
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
Rated 5 out of 5 by Great Product w/o the wait-&-see worries. I can't speak highly enough of this product. I've had dogs I've just recently treated with this product for 16+ years and this has done the best and had quickest response. I've began using it 18 months ago as a result of my vet recommending it (since I didn't like different aspects of other products). This is my 3rd order and I will not go back to any of the other name-brand well known products I previously used. No more wasting money on any of the others I've used in the past. July 23, 2014
Rated 5 out of 5 by This is the BEST flea & tick medicine on the market!! I have livestock guardian dogs that live outside 100% of the time guarding our goat herd and this is by far isthe best flea & tick medicine I have ever used. One pill and the fleas are falling off within 30 minutes and within 24 hours, the dogs are not scratching or itching at all. Considering these dogs are not handled like the average dog, this has been the most convenient and effective flea & tick medicine I have ever found. I use it on my house dogs, cats and the LGD's. GREAT product!! Easy to use!! July 17, 2014
Rated 5 out of 5 by Works great and cheaper here than the vet I have read of some pets having side effects from Comfortis, but our four dogs have never had any issues. I hated squeezing those little tubes of topical flea treatment, and the smell and greasiness that I didn't want on my furniture. I also like that Comfortis takes care of all the fleas fast. July 15, 2014
Rated 5 out of 5 by Super results One of our dogs is highly allergic to fleas and after trying many flea treatments, Comfortis was the only medication that eliminated the fleas and relieved his skin allergies. July 3, 2014
Rated 5 out of 5 by Works great We recently moved to the beach in California from Colorado and my dog had an allergic reaction to the sand fleas immediately. I tried the Advantage but had no luck, so I took her to the veterinarian and he gave me one dose to try. I was worried about side effects but there haven't been any. It wasn't easy to get her to take it but the effectiveness was great and it lasted almost 2 months! You have to get tricky as they can smell it in there favorite food and will refuse it, but I always manage to find a way to get her to digest it. I am so happy to find something that works, I had to write a review. Highly recommend this miracle pill :) June 27, 2014
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