Frontline Reviews

We have always used Frontline on our 4 dogs and never had a issue. UNTIL now I bought 2 boxes spending eighty dollars and it did NOT WORK at all! I just got off the phone with Frontline and in a nut shell they do NOT CARE in the least! All I wanted because I figured that batch was not good, is just replace my boxes and it was no! They asked the most dumb questions I have ever heard, which with all these questions they were searching for a reason it was my fault.... NOT that their product did not work! When you are paying more for their product than others and it does NOT work... time to find another brand. God help you if your dog was hurt by this product because I promise you Frontline will blame you... not them!

Don't buy Frontline for your pet, it used to work on my dogs couple of years ago, now it's less effective. First use my dogs are biting and itching constantly now than before apply. The money I spent on this product is no longer worth the value and the safety of my 2 dogs.

My two rat terriers have had SEVEN engorged ticks on them in the past two months since using this product. I sent a picture of one to the company that makes Frontline, and told them what happened. (See attached photo) They claim they take this "very seriously,' but would not stand behind their "guarantee" because I didn't purchase from one of their preferred distributors. Meanwhile, my dogs continue to come in the house with wood ticks and deer ticks, possibly infecting my cats. This is a horrible product and an irresponsible company. They should be put out of business.

I have been a consumer of Frontline for the last 3 years. As of lately, I’m not sure if they’ve changed the ingredients in their product, but it doesn’t have the same potency as it did before. It’s useless. I have been treating my cat for 3 mos and it’s not working.

I’ve used Frontline Plus for years and the last 18 months it just does not work!!!! We have ten chi-weenies and apply it correctly to each one and they never stop itching or biting! You can even check them one day later, two days later and so on and you’ll still find fleas crawling on the skin. FRONTLINE PLUS for 10 dogs repeatedly is NOT CHEAP especially when we’re applying it bi-weekly and no change. Purchased at COSTCO and WALMART.

Honestly, wish I could leave a "zero". I have purchased this product over the years and it always worked well. But somehow the formula has been changed! For anyone claiming this product works, you are being dishonest. After realizing the application did not work, I applied a 2nd application 2 days later. Now, for those of you who have wasted your hard earned cash as I did, laugh with me! Because we know the truth, that the product has been changed.

My dog groomer recommended Frontline for small dogs (I have a small Maltese 6 lbs when wet). He was always a small white cottonball especially when blow dried. Unfortunately, I applied the topical medication directly to his skin between his shoulder blades. By the 3rd application his hair was thinning and I noticed a change to the color of his skin. Long story short, he is basically furless now except for the fur around his legs head/neck areas. I changed his diet and give him supplements for his skin/coat nothing works!! DO NOT use this product if you are not completely sure that your small dog will not have an allergic reaction.

Frontline states clearly on their box that it kills fleas and ticks. I have used it for years and it doesn’t work anymore. My dogs not only got fleas but one has Lyme disease. The veterinarian says it doesn’t work and recommends not to use it.

We’ve used this for as long as we’ve had dogs which is 15 years. This past summer (2023) we have struggled with fleas on our dogs. They’re all inside dogs and we’ve never had issues with fleas before now. I’m not sure if the formula has changed or what is going on but I def will not be buying this ever again.

My dog had fleas so I put Frontline Plus in between the shoulder blades. 30 minutes later I saw her skin start turning really pink. To make matters worse it didn't even kill the fleas. Fleas were all over her face and body. We had to shave off the hair and now she has this big hot spot and painful for her. I am never buying this product again.

Absolutely ineffective, Don't waste your money. This product does nothing. I am 53 and never have I ever had an issue like this. This flea medicine and many others no longer work. Buyer beware. Buyer beware.

I found two kitten and they were full of flea so we bath them in Dawn dish soap, brush them with a flea comb and waited until the next day Like the direction state before Appling Frontline for small cat 1.5 pds. Within 3 days after they both were loaded with fleas, it was like we didn't use anything. I been combining them 3 times a day now, spraying my home daily. I'm afraid to use anything on them beside dawn dish soap until the frontline has wore off. I will be using the Seresto collar instead. I have 2 other cats that have these collar on and with the Kittens having bad flea problems, I didn't find one flea on my other 2 cats. If I would of knew I can use seresto collars on kitten I would of bought these instead of frontline. I'm highly disappointed in Frontline

I bought this product for my cat. In one month my cat passed away. She was 13 months old and healthy. I would advise to my worst enemy NOT TO BUY this product! 12 years ago I used Frontline for my dog. He died from sarcoma of the skin. People need to be aware about Frontline Plus. DO NOT BUY THIS PRODUCT.

I bought Frontline Plus for my dogs and cat. Used the first month absolutely no results expect the flea have tripled. My dogs' second month absolutely no results either. Ten years ago I used this and it was great. Now my dogs are miserable. I lost way more money than that company should be allowed to charge for sewer water. Absolute trash.

I've been using this product for years but this last year it has not worked at all. Within less than 2 weeks my pom chi is covered in fleas. Now after reading reviews I'm shocked to have read that pets have died! OMG!! Are you serious!! You are selling an expensive product that is killing animals and doesn't work! What is wrong with you! Never again! How could you?

Treated two cats and both lost hair. Attempted to contact and got nowhere. Used it for years and it was our go to and kept my house of 6 cats free of fleas and ticks. Now it causes bald spots, fleas don't even reduce in number and ticks are also oblivious and unaffected. It doesn't work and hurts animals.

This product used to work, it no longer does and they it is still the most highly regarded, costly topical treatment on the market. When I tried to report this to the company, it disconnects. Scam product now.

I rescue animals of all kinds. I put Frontline Plus on my five small dogs and the fleas are still all over them. This was wasted money that I can’t afford on a limited income. This product is expensive and for it not to work is a waste! I am on disability, since I can’t work a normal job I started an animal rescue. It gives me purpose. I will no longer recommend your products to those ask my advice. The cost is outrageous for a product that doesn’t work!

I applied this to my dogs for many years, and so did the shelter where they lived. They eventually got cancer and I'm uncertain if it's related to Frontline. They lived a very active life even to the end and had the highest quality dog food. One of the dog's cancer became prone to seizures. I noticed after time that he'd have a seizure within a day of applying Frontline. I stopped giving it to him and he never had another seizure.

My cat has got sores on her tummy after administering this killer product. She stopped eating, and was not herself after applying this product. She his now on antibiotics and ** for her sores. I BEG YOU PLEASE DO NOT USE THIS PRODUCT ON YOUR CAT. It will do more harm than good. It might kill fleas, plus kill your cat as well.

In May of 2019, I used Frontline on my beloved 13-year-old cat NeiNei. Within hours she could no longer stand up fully or walk straight. She fell over constantly, lost her appetite, and the once happiest little girl in the world was looking lost and upset. I called the vet immediately, and we agreed to monitor her. The vet was unaware of Frontline causing neurological issues and attributed the situation more to her age (13). I know she was happy and playful before I applied the Frontline, and yet only hours after she was on her way out. I never believed it was a coincidence, and I still blame myself for applying the flea treatment.

Please do NOT use this product on small animals. My enigmatic, fun loving, energetic Yorkshire Terrier Aged 10, who won prizes for his wagging tail has died after using Frontline flea product (measured for weight) with Toxic Lymphoma. First dose ever end August 2020 caused lymph nodes to swell to 4cm diameter and organ failure, died 4.44am 1st November 2020. RIP. Tragically Unfair. Please note 1 star is minimum, I wish to portray none. Please adjust Consumer Affairs.

After using Frontline Plus for cats during the last week of August 2019 our beloved cat Annie died on September 1, 2019. He organs literally shut down and there was no reviving her. This product is toxic and lethal! If you are wondering why I waited to write a review the simple fact is I was too upset and I blamed myself for using it. Until recently I could not even look at her photos without crying. Our Maine Coon Andy, Annie's brother survived although he had minor side effects. He too grieved for months after her passing. Frontline Plus should not even be sold! It is toxic! It is lethal! Frontline Plus will kill your cats!

Do not give your pets for a night. I I had a nine-year-old Shih Tzu and this product killed him. He started having seizures and tremors in the barely walk and then stop eating and then stop drinking and died. I gave him his medication August 18. He started acting funny around the 20th. Seizures that the vet was no help. He died today September 5 at four in the morning. This company needs to be exposed. Do not give your dogs this stuff. Do not give your kids the stuff. It is poison. They killed my dog. This is crazy. My dog was perfectly healthy before I gave him this and regardless of what warnings on the box if you know and all these people are complaining you have lost pets why are they still in business?

The vet prescribed this because they would not sell me bravado until I made a well check appointment, I understand that but now my cat has lost 6 pounds and isn't doing great. So another appt to come for her. I am absolutely angry about it and am feeling guilty because I put it on her and now watch her diminish slowly in front of me. I'm hoping she will bounce back. She is an outside cat and energetic usually now she is in the house most of the time sleeping. I don't want to lose my cat. I'm not ready for that. She was my mom's the first 5 yrs of her life before my mom passed away. So NEVER AGAIN will I use this. She is still young to me and has many more years to come. I hope we can turn this around for her.

This is 3 days after the second application, the first application was 30 days ago and this morning I removed 6 more ticks. I removed 12 yesterday. I did not know or suspect any insect infestation on the dog until I cut her hair. The complaint desk tried to up-sale me onto Nexgard which requires a veterinarian prescription. They will refund purchase price if I have proof of purchase. I will replace the bed and use a valid tick insecticide on the downstairs.

I had 2 dogs. I just lost one of them who to chronic seizures this year as of April that led to paralysis and brain damage even though he was on seizure meds prescribed by a vet. My other dog also had 1 seizure a day after an application. Both dogs had been on the meds for a few years. Their seizures tended to happen just a day or two after Frontline Plus application. My vet took my existing dog off Frontline and Heartgard immediately. I believe some dogs' systems do not dissipate these chemicals over the course of a month resulting in a toxic buildup. These meds are - you guessed it - neurotoxins. Am heartbroken over my recent loss of the sweetest rescue I've ever had. Will never use these products again.

I’ve had cats for 55 years. I currently have a 10yr cat and a very young pregnant cat. (Lockdown delayed vet appointment then she flew out the door and returned pregnant.) We’re otherwise responsible pet owners! Years ago my vet used Frontline on my 3yr Italian Greyhound who from the next day forward had grand mal seizures 6-7 times a month but the vet of 50+ yrs said he’d never heard of that happening. I always felt then but I’m even more certain now after giving Frontline to our 2 cats 2 weeks ago - this product is dangerous to many animals and should have been taken off the market long ago!

I asked my roommate to pick up some Frontline after he let the cats out and they came back with fleas. He drops the packages on my desk and helps me apply the treatments to four cats. Within ten minutes, one of my creatures isn't acting right. Ten minutes later, she's agitated and panting. She's already lost interest in playing, is running around, and panting furiously. Oh no...

Applicator difficult. I currently have 4 cats, and have had cats for about 40 years. I have always used Frontline. However, I will no longer use it, due to the package being so difficult to open. When they began using the new packaging, I was not satisfied and continue to not be! It is too difficult to open. I will no longer use it!!