Frontline Reviews

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About Frontline

Pros
  • Long-term use shows consistent results
  • Widely available in stores
Cons
  • Causes adverse reactions in some pets
  • Customer service can be unhelpful

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Frontline Reviews

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    How do I know I can trust these reviews about Frontline?
    • 4,886,447 reviews on ConsumerAffairs are verified.
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    Page 1 Reviews 0 - 10
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    Reviewed April 16, 2026

    Only a one because there is not a 0. DO NOT PUT THIS SHIT ON YOUR DOG. MY DOG IS DEAD THANKS TO THIS SHIT. A 5 year old extremely healthy Irish Setter. Gone just like that.

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    Reviewed Feb. 28, 2026

    Gave my cat Frontline by directions. She got very sick. You are taking a chance of hurting your precious pet if you use it. I have to not recommend it. I think fleas are safer. Or using a natural repellent rather than this.

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      Reviewed Nov. 24, 2025

      Doesn't work!!! I bathed my dog 3 days before with flea & tick shampoo, as suggested, I constantly vacuum my house, fleas are only on my dog! Didn't work at all! I don't make enough money to be wasting on bs.

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      Punctuality & SpeedStaff

      Reviewed Nov. 12, 2025

      This is an EXTREMELY DANGEROUS PRODUCT!! After application, my dogs were playing, got it in their mouths. One dog was deathly sick for over a week and the other one died within FOUR DAYS after application. A healthy YOUNG year and a half old dog went from being top health to DEAD in FOUR DAYS! I'm still taking care of the other one who stopped eating for days, lost a lot of weight. I have had to force feed him and he's finally starting to recover two weeks later. Never again will I EVER use Frontline products ever again. I would suggest you don't either. Read the FINE PRINT. It can cause severe reactions and death in dogs. I am not sure why a product that can kill dogs like this is available over the counter.

      Frontline needs to be sued in a giant class action lawsuit by everyone who lost pets and money trying to cure pets damaged by this product. BUYER BEWARE. YOU ARE PLAYING RUSSIAN ROULETTE WITH YOUR PETS USING THIS DANGEROUS TOXIC PRODUCT. Peanut would have faired better scratching at fleas. And the other dogs I have that are ok, STILL HAVE FLEAS. This product needs to be pulled from shelves immediately!!

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      Customer ServiceRefunds & PayoutsStaff

      Reviewed Oct. 8, 2025

      My dog had an adverse reaction. I called the company and they told me to wash with dish soap. The vet prescribed ** for the itching. The dog became very irritable and tried to bite my son which is out of character. The itchiness went away after a few days and he seemed to be getting better even though there was a hard spot at the application site. Now the hair is clumping and falling out and he has a bald spot a little larger than a quarter. The vet believes it is a chemical burn from the application. When I called the company for monetary compensation for vet visit and treatment they said I had to proceed in writing and hung up on me. My veterinarian is helping me file the paperwork but I’m still out of pocket for the vet visit until I hear back.

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      PriceStaffRates

      Reviewed Sept. 8, 2025

      I bought this product for the first time to try and my pet. The other products I was using were not bringing me satisfaction I wanted, so I tried Frontline the more pricey product hoping if I spent more I'd be more likely to have it work better. Guys read reviews first. I wish I did that before I bought the product. My dog has never used this product before either. I started the first treatment and mind you he is a inside dog so he don't get fleas or ticks like that but the problem got worse.

      I've had my pet for over 5 years and never had this issues with the cheaper medication I used for my pet. Well I switch the this brand and my dog gets worse fleas and also got bite by a tick and is not fighting for his life. He has 2 tick diseases. Plus anemia over the tick diseases. This medication was suppose to help keep those away and if anything the cheaper ones kept ticks away for many years for me and my dog and as I switch to a different medication trying to find something that would work better it turned bad. So I'm just here to let others no don't waste your money. It doesn't help. If I could rate it 0 I would. I highly recommend do not use this product. Find a better product..

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      Customer ServiceStaff

      Reviewed July 21, 2025

      Frontline Plus killed my dog within 48 hours of using product. My dog could not move her back legs and was paralyzed with extreme pain. Do NOT use this horrible poison. The customer service did NOT help.

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      Contract & TermsPunctuality & SpeedStaff

      Reviewed July 9, 2025

      I used on my 2 dogs and fleas just kept getting worse. Customer care said it was because bathing my dogs washed it off. I waited 3 days before bathing. She said you can only use a dog shampoo, especially saying very gentle. Any excuse to get out of guarantee it seems. Box says satisfaction guarantee.

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      Customer ServiceRefunds & Payouts

      Reviewed June 22, 2025

      I bought Frontline and put on my 3 inside dogs. Needless to say it’s June 22 and my dogs have flea infestation and now I’ll have to bomb my home. Such a waste of 40.00. Now I’ll be calling the vet tomorrow to see when I can get **. Totally not happy. You should give a refund.

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      Staff

      Reviewed June 20, 2025

      Twice now I have purchased this product in hopes of giving my dogs relief from the fleas, and it is beyond ineffective, I might of well just sprayed water on them, probably would have been better off because now they have chemicals on them that did not even help.

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      Frontline Company Information

      Company Name:
      Frontline
      Website:
      www.frontline.com