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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 Been going through Flea hell for a month now- spent about $200 on various products (Raid sent me a Been going through Flea hell for a month now- spent about $200 on various products (Raid sent me a refund because the sprays didn't eradicate fleas in the house; Merial- makers of Frontline, with Good Housekeeping seal of approval, promises Money back if not satisified- they lie- you have to go through so many hoops, prove you've used the product for more than 90 days and then they will refund only one month). My dogs were freaking miserable and I felt guilty, overwhelmed and totally stumped! BFF told me about Comfortis- she just heard about it from our vet- More expensive, initially, yeah- but it WORKS!! You can't beat that. Nothing's more expensive than buying products which don't work. Been 24 hours- still seeing some dying flea activity (residual from the yard). Another client at the Vet's said not to bother paying for yard poisons, let the Comfortis do it's job. So far, so great! May 5, 2010
Rated 5 out of 5 Finally !!!! The "insecticides" in almost all of the major flea-control products are toxic & very-dangerous. I have tried them all, including sprays, topicals, holistic herbs, garlic, brewers-yeast, etc., each having, frightening, reactive side-effects, as well as "not-working" !!! Comfortis is "safe" and it "works" FDA & EPA approved... May 1, 2010
Rated 5 out of 5 Works Great! I have a 7 lb. Chorkie that is highly allergic to fleas. We fought for 4 years the constant scratching, itching, loss of hair, crusty, oily, and scaley skin, along with terrible odor. We had tried everything and finally after numerous topical meds and 4 vets later one suggested Comfortis and it has proved to be a miracle cure. We noticed a difference in just days! My dog is now able to sleep at night instead of scratching all night long and her coat looks beautiful. We live in southern Illinois and use this all year long on her with great results. Have always bought from the vet though this company is comparable in price. Great product if you are having trouble with fleas you should give it a try! April 30, 2010
Rated 5 out of 5 Love comfortis!!!!! Love this stuff....no fleas whatsoever....topical treatments last only 3 weeks on my dog.... April 29, 2010
Rated 5 out of 5 This stuff really works. Hi, We have a 1 year old yellow labrador, and this stuff really works, we were giving him 4 baths a week with the flea shampoo, (that comes along with the horrible smell) then the horrible flea thing on his back. (then you couldn't pet the dog for days). I felt so sorry for him. Then my vet recommened this Comforits and it works GREAT. No more flea baths (just 1 a month) no more medicine on his back, just 1 chewable after he eats and that's it. AND TRUST ME THE FLEAS JUST JUMP OFF.(I CALL IT "ABANDONING SHIP"AND THEY ARE DEAD, AND THERE ARE NO MORE LIL BLACK EGGS HANGING AROUND ANYMORE. THANK YOU COMFORITIS FOR MAKING MY LIFE AND MY DOGS LIFE GREAT...... April 27, 2010
Rated 5 out of 5 My bichon frise loves comfortis We moved from Kansas to the Costal Bend of Texas and I wasn't expecting fleas year round. But yep, they were here. Tried everything on the market. My groomer recommended comfortis and it works. Now my little bichon is a happy camper. We still spray the yard (since it's nothing but sand down here). This is a great product. April 26, 2010
Rated 5 out of 5 No worries I was a little afraid of giving my dog ANOTHER pill on top of his heartworm, but it worked fast and effectively.. we live out in the country and with the topical it would work for like 2 weeks maybe then we would start seeing fleas, about 24 hours after we gave him this pill there were no fleas to be found and we havent seen any since! thanks alot!! April 15, 2010
Rated 5 out of 5 Will never buy anything else! After having a couple of flea infestations in my house and on my dogs, flea baths and drops were not working, I found Comfortis. It has worked flawlessly! I have not noticed any side effects in either of my dogs, an 80-90 lb German-German Shepard, and a 40lb Chow-Border Collie mix. April 1, 2010
Rated 5 out of 5 cant find any fleas on him i luv this product! if there are no fleas than they cannot have allergic reactions to the saliva of flea. Therefore less scratching and licking. March 25, 2010
Rated 5 out of 5 This is the BEST!!!! My vet recommended this. It is the best stuff I have ever used! Highly, highly, highly recommend. March 19, 2010
Rated 5 out of 5 NO MORE FLEAS WE TRIED EVERYTHING FOR FLEAS, AND THE FLEAS WOULD STAY OFF FOR ABOUT TWO WEEKS. OUR GROOMER TOLD US ABOUT COMFORTIS SO WE TRIED IT , WOW THE BEST THING WE EVER USED ,IN FACT I WANTED TO SEE HOW LONG WE COULD GO BEFORE RETREATING, WE ACUTALLY WENT TWO AND A HALF MONTHS BEFORE SHE GOT FLEAS AGAIN.WE LIVE IN FLA. WHERE FLEAS DON'T DIE, AND WE HAVE AT LEAST EIGHT SQUIRRLS IN OUR YARD EVERY DAY. January 26, 2010
Rated 5 out of 5 This stuff works! I haven't bought from this site, yet. I can tell you our little Maltese, along with me and my husband, love how well it works! It's worth the money spent, hands down. January 20, 2010
Rated 5 out of 5 Awesome Product! My 11 lb crested suffered severe reactions to the topical treatments we had been using ... everything from severe itching to hair loss to fleas ... comfortis solved all of our problems and she has been flea free for 4 months now :) January 17, 2010
Rated 5 out of 5 Highly Recommended I am in Florida for the winter and fought fleas for several weeks untill a veterinarian told me about comfortis, I would not be out of it for my dog. I use it year around when we return to Michigan for the summer. January 16, 2010
Rated 5 out of 5 helped my doxsie! This product definitely solved the flea and scratching problem that has plagued our semi-smooth mini dachshund for years! When I discontinued the product (trying to save money in the winter), the scratching resumed and I have actually seen fleas again (probably due to indoor/outdoor cats). Poor pup has scabs and thinning fur all over now--can't wait to receive the shipment ordered today. December 30, 2009
Rated 5 out of 5 Comfortis ___Super Flea Killer Tried everything nothing worked.... my dog was so bad he was scratching himslef till he bled. Then I started him on comfortis . Totally new dog, you can just tell how happy he is now. Might be a little more money than the others but, if you care about your animal it is well worth it!!!! December 21, 2009
Rated 2 out of 5 my dog had adverse reaction After giving Comfortis, I put my dogs outside and when I checked on them my smallest dog had collasped on the lawn. He was very lethargic. It didn't last long but was scary for me. If you use, just observe your pet for at least an hour. December 13, 2009
Rated 5 out of 5 This is the ONLY product i use now!! I will let you all know of a little secret! After using ALL of the flea treatments on the market,i finally found this Comfortis.and i will never use anything else because this stuff does really work best! Good luck with all of you pet lovers!! Remember that WE are our pets only VOICE, and they are our family and so much more,no matter what they are with us 24/7..thru the good and bad times and always ready to give us comfort and love..unconditionally. I have had my little pup for 20 years now,and I believe that she is still with me because she gets a lot of love and attention and also the best of care!!Always!! November 21, 2009
Rated 5 out of 5 Shitzu 17lb Flea Free! Like many other stories on here, my house was infested and we fogged, sprayed, dusted, etc. NOTHING CONTROLLED THE FLEAS.. My vet sugested Comfortis and within hours all fleas gone! November 19, 2009
Rated 5 out of 5 8# Lhasa Apsos She has never had a problem with this and I have not seen a single Flea...In 9 months of use.. October 6, 2009
Rated 5 out of 5 Expense of Comfortis Comfortis is the only thing I have ever used that actually works. It does not seem to last for the full 30 days, but it's close. The expense is a problem for some people, but as far as the price, this site is by far the most expensive. On other sites you can get it for around ten dollars a pill. I have two Yorkies and they get infested without it, but having two dogs makes you look for the better deal. This site is not the better deal. October 6, 2009
Rated 5 out of 5 WOW! I love this stuff! Who would have thought that ONE pill per month would cure the problem! I'm happy, the dogs are happy & Husband is happy that he gets to keep the dogs! It also works wonders on an outsie pet as well...I suggested it to my neighbor and their BIG dog is sooo much happier now. I even buy it and send it to my daughte! THANK YOU...THANK YOU...THANK YOU! October 5, 2009
Rated 5 out of 5 Terri OMG Comfortis is amazing. I have a Yellow Lab and he was driving me crazy scratching all the time. I had tried Frontline and numerous other flea control the Vet had recommended but nothing was working. This time the Vet told me about Comfortis but said it didn't kill ticks. This late in year I wasn't concerned about ticks just wanted rid of the dang fleas. When I got home I gave him the chewable Comfortis and within 30 minutes you could actually see the fleas at the top of his hair trying to get off and were dying. By that evening no more scratching and no more fleas. I totally recommend this and will never use anything else again. October 4, 2009
Rated 5 out of 5 Finally something that works!!!! Last summer (2008) I bombed my house more times than I care to remember, and still had fleas. I used Comfortis, immediately had comfortable pets and I haven't fogged since. I went to the vet this week to buy a new supply and they no longer stock it. They said the price made most people shy away. I probably spent more than the price of a six month supply on foggers last year and had to take the time away from the house and worry about what my family might be inhaling. Seems like a bargain to me September 24, 2009
Rated 5 out of 5 Fantastic My dog was eat up with fleas and at a current time I couldnt afford anything, when I got her back to the vet she offered me the comfortis and I had read something about a pill that killed fleas but was making dogs sick. She assured me that this was very safe. ibrought her back home fed her and gave it to her honestly worried that something would effect her. I watched her very close for several hours, and got ready for bed, put her in her kennel and the next morning I wooke up and she was completely flea free. I have occationally seen the random flea on her but I would check again and its gone. I am completely relieved that it works as well as my vet said. Now I dont have to worry about messy greasy flea killer and trying to keep her still while I put it on. I know that the cost is a little more but I am willing to pay out a little more now that I see the outcome!! September 16, 2009
Rated 5 out of 5 wonderful stuff! My poor little dog was covered with fleas, we tried everything. Now no more fleas on her! Comfortis just works, and quickly. Highly recommend it. September 15, 2009
Rated 5 out of 5 Flea Free at last I have lived in Florida and had dogs all my life and have always battled fleas. Comfortis is the only product I have ever used that really works. My two dogs are in and out all day long but after being on Comfortis for almost a year we are totally flea free. No more fleas in the yard, in the house, on the two cats, and of course on the dogs. I have seen no down side at all. No bad side effects. Just a couple of happy of old gentlemen dogs and fluffy lady strays. September 12, 2009
Rated 5 out of 5 Won't use anything else My mixed breed springer spaniel and yellow lab got a severe reaction to fleas and scratched themselves raw last year. After 3 trips, alot of money at the vet's office, and trying everything under the sun to control the fleas that seemed to be everywhere, I tried comfortis. It works great, no bad reactions and the fleas are gone, gone , gone. It seems to do a good job for about 3 weeks then the effects wear off sooner, more during the summer months than in winter. I do wish it would kill ticks, but you can put a tick collar on your dog and just check them when they come in from outside. But it is worth the money, My dogs had no reactions to fleas this year, it costs me a few thousand last year for their treatment before I tried this. I won't use anything else. September 12, 2009
Rated 5 out of 5 Comfortis really takes out the fleas on our Mini-poodle and we are all so happy! Dart the poodle goes outside several times a day. We live in the country and there fields he has to visit daily and friend dogs down our dead-end road. He will come home with grass and leaves hanging from his ears, and weeds and thistles and "stick-tights" embed in his curly black hair. On these treks in the neighbood he would also be infested with fleas. Vet changed his Front-Line flea product to Comfortis.We have no more fleas. Give it with his food. He likes crumbled in he soft food, We have no more ticks also,LinL September 3, 2009
Rated 5 out of 5 Better than anything else I've tried We used Frontline and Advantage on our lab. We have three inside kitties and Stella is an inside/outside dog. Even on the other medications, she was still bringing in fleas, which were getting on the kitties. But this stuff... wow! Kills quick and KEEPS killing. It seemed like with Frontline and Advantage the fleas would get on her and take some time to die. With Comfortis they die very quickly and don't even come in the house with her! Dog and kitties are happy and flea free! September 3, 2009
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