Frontline Reviews

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!!

Sunday March 8th 2020 I administered Feline Frontline to my Cat who was 15 pounds and 10 years old. Monday March 9th 2020 I came home from work and found him lying in my bedroom floor having seizures. My husband and I wrapped him in a towel and started our way to the emergency vet. Before we made it to the end of our road we live on my beloved passed away. We adopted him when he was two years old. He was only an indoor cat and had just had a healthy checkup at the vet. I cannot honestly say that Front-Line caused his death but it is ironic. Kitty Heaven is he.

Carey - 8 years old - mixed breed - 35 lbs. We applied Frontline Gold for the first time ever to our dog on 01/16/20. Within 5 hours she would randomly scream out in pain/because she was scared and jump into our arms. At the time we thought maybe she hurt her leg or back and would touch her spine, rotate her legs, etc. without finding any indication of soreness anywhere on her body. This would happen sporadically on Friday and Saturday. By Saturday evening, it was happening more frequently. And at this point we realized that our dog was having mild seizures. She was not losing consciousness, but she would cry out/get this look about her and then burrow into us and her whole little body would tense up, she would lick her lips (salivating), and stretch out her neck and put her head high into the air.

Frontline Gold was purchased & administered to my cat 12/11 @ vet clinic. Brought in healthy, came home & sneezed for several days, scratched & licked obsessively causing loss of hair, peeling pads and lumps appearing on various parts of body. Cat has lost appetite for food & water and has lost weight. She is in pain, disassociating any human contact, constantly sleeping in secluded, dark places in home. Fearing her death, took back to vet for help. Paid $330 for bloodwork (CBC) to check for liver &/or kidney maladies; ruled out all fatal cat diseases; rec’d skin scrape 2, ** 80 mg/ml injection; provided ** .3 for pain maintenance.

My cat is an older indoor feline and only goes out occasionally on the front porch. I have been treating him with Frontline Gold and called the vet because it does not seem to be working. He said I can give to him 2 times a month instead of once and that seems to be working a bit better. I do think the fleas build a resistance to these meds, only wish they were a bit cheaper since they seem to take so long to start working.

Their money back guarantee is a joke!!! I purchased a 6 dose Frontline Plus for my dogs. After 10 days there was no change or relief. Treated them with another dose. It got worse. I went back and purchased ** and saw a noticeable change within 48 hours. I called to express my concerns. I was told in order for the money back guarantee I had to treat for 3 months. My dog was bleeding in spots from the chewing/scratching. I was NOT subjecting her to that for 3 months when it was clear that after one month your treatment was not working. I was just told by one of your representatives (reading from a script) that how your product works is that it kills adult fleas and keeps females from laying more eggs.

I have treated my 4 cats over 4 months & continue to find fleas. We have followed protocols for flea treatment of our home as recommended by our vet. Seresto collars seem better, but they cause scratching & hair loss at neck. I will admit the collars seem to be more effective, but our vet now is recommending **. I think the fleas are just becoming resistant. These are indoor cats, no less. We are very frustrated & concerned for our fur babies' welfare.

Started using Frontline Plus 2 years ago. At one stage I was using it every two weeks. It just doesn't work, my 3 cats are infested and so is my house. When I complained to the the company they sent me a questionnaire to fill out - I filled it out and they replied rather flippantly- saying they are picking them up from outside. Before that I was using Advantage but was buying it from the chemist but at £27 for 3 pipettes it was too expensive - but it worked. My cats are 15, 15 and 16 years old and I don't really want to keep stressing them out with fortnightly defleaing, hoovering several times a day and bathing in cat shampoo which they all hate) so I'm now trying Advantage again and getting it a lot cheaper online - hope this works.

I contacted them to tell them I’ve got fleas for months now and been using product for years. They only try to tell me how to bomb and clean my house. I told them I’m diligent with my Dyson vac and clean every day! They told me to keep using the frontline. It will work. After two ear hematomas and an abscess to my little dog leg I found out he’s suffering from a flea allergy and of course it’s costed me!! Finally the doctor's office told me that Frontline Plus hasn’t worked for a couple years now and they prescribed NexGard which I found is from this same lying company. But I used it because I was desperate and within a week he’s better and stopped shaking his head and scratching. Still to doctor's office told me to use nexgard only as needed (Not monthly) because it isn’t good for your pet.

I purchased Frontline for my cat, from a Walmart store in Hamilton, NJ. My cat was a very loving cat, very playful, wake me up every morning, and just a part of my family. I applied Frontline on my cat on Thursday night, 10/3/19. On early Monday morning 10/7/19, all of a sudden, my cat's body began to start jumping, flipping, and he started to shake and seizure. His chest began to jump, and his heart began to race extremely fast, and then he died on us. After being in complete shock, an emotional wreck, and angry, I decided to contact Frontline and let them know what their product killed my cat. The person that I spoke to, asked me a few questions, gave me a reference number, and told me that someone will contact me asap.

Bought Frontline plus. It didnt work so I called frontline to complain and the lady on the phone was so rude. Didnt even offer to give me a refund or anything. Dont trust this company. They say 100% guaranteed. That's false.

My dog got fleas 7-8 years ago & his savior was Frontline. Since then I've religiously used frontline on him thru at least spring & summer & no problem! Works excellent! Last year I adopted a cat. Since he often goes outside I resorted to frontline. This kitty runs everywhere, unlike my dog. He brought back fleas. I was so shocked. I'd treated him with frontline plus 2 weeks prior to noticing fleas. After seeing fleas on both I bathed them in flea shampoo, cleared the house & treated them with frontline. Every week I wash their beds, bath them & spray & vacuum. 2 months later I'm done with frontline. Switched to advantage & now I can stop spending money on cleanup finally.

I have always used Frontline on my dogs and it's done very well, until this year. I feel like I'm wasting my money and my dogs are paying the price. Poor little guys are miserable. I see no decrease in the fleas and I'm trying to find other ways to treat them. I am not getting what I'm paying for! What a disappointment. I will be switching to something else in the future.

I am going to keep this simple September - 2017 I took my German Shepard to the vet for a routine Blood! He had skin issues. September - 2017 - The blood work came back. Went through it all. Everything all was fine. I Used Frontline. MY DOG HAD SEIZURES and DIED! I never thought of this because this was the only thing different was flea and tick (vet prescribed).

I found ticks on my dog and used Frontline Plus on my dog. It has been over a week, and I pulled two more (attached) ticks off of him last night. This product did not work at all. It was expensive and a complete waste.

I called the company at 1-800-660-1842 because after 13 years of using Frontline Plus monthly on my 2 older dogs, my dogs have fleas. (I also used this same product on my other dogs for years prior.) Their customer service representative explained to me the life cycle of the flea and how the medicine works multiple times (which I was told that I obviously didn't understand) and the change in weather conditions, as if I'm ignorant and the weather hasn't changed at all in 13 years.

Frontline just doesnt work. I didn't even see a decrease in the amount of fleas in both my cat or dog. I'm on a very tight budget so to spend $135 on the medicine for it to not work is heartbreaking because I cannot buy another brand until I have saved up the money again. They won't refund. I just can't believe that companies like this can just get away with selling products that don't work, it is disgusting.

I used Frontline Combo for my dog for over 10 years and I didn't have any problems with fleas or ticks until recently. On the last lot I purchased, less than a week after application I found fleas on my dog. I noticed also that the package design is different and I wonder if maybe this is now produced in China or they changed the formula. This would explain why it's not efficient anymore.

Adopted a new kitten a year ago, when I took him to the vet to be neutered we discovered he had fleas. I have three other house cats which have never had or been exposed to fleas. Have been treating the kitten and one of my adult cats that the fleas have jumped on since last March with Frontline only to find it is absolutely worthless but quite pricey. The vet sold it to me. I was shocked with the price and find it to be nothing more than a total waste of money. Save yourself the aggravation and money and try a reputable product.

I would not recommend this product to anyone. My poor baby Bella is at the vet 8/24/19. They are keeping her overnight. The medication poisoned her and she is staying at the vet for a couple of days. I pray to God that she makes it. I will never buy this product again and I hope somebody else doesn't. The pain that she is in from the poison in her is horrible. I wouldn't want anyone else's baby to go through this. Thanks for the worse experience Frontline. Melinda Norfolk NY

After reading reviews of other pet owners and their dissatisfaction with Frontline I now realize that has been my problem all summer long. I have 2 cats. I have been giving them Frontline monthly for years and never had a flea problem. Now I have a serious flea problem and realize the Frontline hasn't been working. The past two applications almost seemed to be empty when I applied it. Very Disgusted!!! And continue to fight the fleas on my pets and in my house.

I bought Frontline for my 4 cats because the vet stopped selling Vectra. Three weeks have passed and my cats are still suffering from fleas. Frontline It's expensive and it's crap. Don't waste your money. Buy Vectra on Amazon.

I have never been so disgusted with anything as I am with Frontline Plus! It's expensive and it does NOT work! After treating the yard and house and my dog, the Frontline Plus still did not work! My dog has been suffering with being bitten by fleas. She can't sleep or eat! I am trying Vectra but it's not much better! It's just a money making scam from these companies who claim that their products work. I ABSOLUTELY DO NOT RECOMMEND Frontline Plus! A real WASTE of your time and money! Do yourself and your pet a favor and stay away from the Frontline Plus!

I have treated all my animals with Frontline. I thought fleas were just extremely bad Last year and this year. I even bought the Seresto collars for the dogs and flea collars for cats. I have treated the yard, treated the house and religiously used Frontline monthly. My poor animals were miserable. I ended at the vet because my one or boy started whining. Turns out Frontline is not working and many people have complained. My dogs attire on Nexguard now and my cats Brevecto. The second day You could tell a difference. My animals are finally getting some rest. It's sad to know they have suffered this long and that I have wasted so much money. I have 3 boxes of unused Frontline here now. I think the company should reimburse for unused portion. Will never buy product again!!

I have been using this product religiously as directed for 2 years on my cat... It does not work! I apply it as directed every 3 months... My poor kitty is full of flea dirt and fleas... It's all over my house! I applied it 2 weeks ago and with a flea comb, I got tons of fleas off of her! And there is no expiration date on it! I am pissed! Will never buy this product again!!!!

I used Frontline plus on my two chipoodles. It did nothing. They still had fleas. I called customer service and explain how the product did not work. She told me it was my cat. I told her my cat was also treated but not with Frontline. She told me that I would have to send her a receipt proving that I had my cat treat it and to treat the dogs three more times with Frontline. I told customer service if it did not work once why would I spend the money three more times. She called me a liar about my cat. Not only is the product bad so is the customer service.

TLDR: This product sucks. Don't waste your money or your time. I put this on my indoor only kitten about 3 days after I adopted her (around July 1st). She was about 12 weeks old at the time. This past weekend on July 28th I noticed she started itching a lot and shaking her head and found what looked like flea dirt. I was skeptical because I knew she was on the medication but I gave her a bath to check. To my horror all the fleas came up to her face. Unsure if she got it at the vet or someone just tracked it in since we've never had a problem with fleas. Looking back at my videos, what looked like harmless scratches or head shakes (which I thought was due to her long ear hairs getting tickled) dated back all the way to July 7th.

My poodle still has fleas after two weeks of applying a whole tube of Frontline Plus and then applying a second application of a few drops. He’s sleeping in a closet at night which he has NEVER done and acting strange since applying this stuff. I see flea dirt and he continues to scratch. He is miserable and so are we, seeing him in such distress... We used this for years with no problems. Are the fleas now immune? I think this should be investigated or has something happened to the formula?? Something is WRONG!

About 3 weeks ago I found a flea on my arm. We treated our 2 indoor cats right away. Our male runs outside sometimes for a minute or two if we don't catch him in time. So we figured he brought them in. We treated the cats two weeks ago with Frontline Plus for Cats. They still have fleas! We'll find a dead (or dying) flea here and there, but there are a ton of active fleas still around. Where my male cat lays, there's still tons of flea dirt coming off him. My female is very scabby.

After applying Frontline Gold to our cat, we noticed her acting very strangely. Whenever we let her inside, she jumped onto the counters or furniture and leaped onto tables, chairs, etc avoiding the floor. Our vet said they had reports of other cats acting like this. It was as though see could see something on the floor and was frightened to walk there. Same with carpet and tile. Has anyone else experienced a reaction like this?

I purchased Frontline Plus from Chewey.com. IT WILL BE FIVE MORE DAYS before the 30 days are up before I can give her the third dose. I put the product on for the past 2 mo. and 3 wks. exactly as directed. My dog STILL has fleas and really rough spots that could be flea nests. She has little bumps in her ears. She scratches all the time and I see fleas on her.

I am contact you today regard a product. Frontline Plus for cat. I purchased this product and it came sealed in the box with lot number and all the information stamped on box and also on the sealed applicators. Says for cat use only. When we took the green applicator out it say for use on 45-88lbs dogs only with picture of cat crossed out. All of them are like that. I can send you pictures if you would like. My concern is if I had not look at the green tube it would of went on a cat that is about 10lbs. The epa numbers do not match the package either inside or outside. Please contact me back regarding this problem.. If this was a packaging error a lot of animal can become very sick or even worse.

I have used Frontline Plus for 1 complete year documenting it on the calendar every time to ensure not missing a dose. I have also spoken with Frontline's reps. many times ensuring me that the product would work in time. My cat is infested with Fleas. I would not waste my money on this product. I bought 12 months worth and they would only refund for 1 month.

I've notice they happened to me that has happened to others ordering off Amazon. I actually applied to to my mama cat and I just happened to see a dog on the green dispenser and I immediately gave her a good bath. I almost put it on my other cats. I am so upset by this. I did get a refund. I just wonder if someone that works for Merrick could have done that on purpose.

Inside the 'Frontline Plus for cats' box that I ordered, there are 3 vials that are marked "Frontline Plus for dogs, 45 - 88 lbs." I am currently trying to contact Merial. Thank goodness I caught this in time.

I am horrified by my experience. I bought a 3 pack of Frontline Plus for cats from Amazon. Box arrived, said it was for cats. Inside the box the outer foil said for cats. The vial/green squeeze thing said it was for dogs 45 to 88 lbs. First - never mix flea meds between cats and dogs. Dog flea meds are toxic to cats. But second, even if it was okay, that would have overdosed my cats. I can't even think about the worst outcome! I called Amazon and was refunded, but I also called Merial. This was clearly an issue at their plant - where the vials were sealed in the wrong foil pack. Very scary. They're going to send me out a replacement and they want me to send them everything so they can investigate further. I emailed photos and am waiting for the label to send the stuff back. BE CAREFUL! I don't want you to lose a kitty! Check your medication before applying it.

I spent over $100 for this for my 2 dogs and they still have fleas. I feel so bad for them because they are itching like crazy and I feel like there's nothing I can do for them. I've spent over $100 on this Frontline stuff and flea collars and now I just guess I'm going to have to take them to the vet and spend more money.