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Seresto 8-Month Flea & Tick Collar for Cats & Kittens, 1ct

  • Based on 47,375 reviews
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Size: 1 Pack


Features

  • #1 VET RECOMMENDED*: Seresto is a long-lasting flea and tick collar recommended* most by veterinarians, providing 8 months of reliable protection against fleas and ticks *Elanco Animal Health. Data on file. REF-23987
  • TAKES DOWN FLEAS & TICKS: The Seresto collar kills and repels fleas on cats 24 hours after application, becoming fully effective against ticks after 48 hours
  • BREAKS THE FLEA LIFE CYCLE: This tick and flea collar for cats treats existing flea infestations and prevents re-infestation by killing and repelling fleas before they lay eggs
  • EXTENDED-RELEASE TECHNOLOGY: The collar is designed to slowly and consistently distribute the active ingredients (flumethrin and imidacloprid) over your cat's skin and coat for 8 continuous months, protecting them season to season
  • FOR CATS & KITTENS Seresto delivers reliable flea and tick control for cats and kittens 10 weeks of age and older

Description

When it comes to flea and tick prevention for cats, there’s a reason Seresto has over 51 million collars sold. As the original flea and tick collar, Seresto has delivered reliable, long-lasting protection for years, earning its place as a leader in flea and tick control.Formulated with flumethrin and imidacloprid, the Seresto collar kills and repels fleas and ticks on cats for a full 8 months. It treats existing infestations of fleas and ticks, and prevents new ones from happening. What's more, this tick and flea treatment for cats is effective against fleas that may transmit tapeworm infections, as well as ticks that may transmit Lyme disease, anaplasmosis, Rocky Mountain spotted fever, and more.How it works: The collar's polymer matrix uses extended-release technology to gradually distribute the active ingredients across your cat's skin and coat for 8 months. That's season-to-season flea and tick prevention for cats that you can count on.Recognized as the 1 vet- recommended^ flea and tick collar, Seresto delivers 8-month efficacy against fleas and ticks backed by years of real-world use.The adjustable Seresto Cat Collar is designed for cats and kittens 10 weeks of age and older. It's also odorless and non-greasy. Just easy cat flea treatment and prevention that lasts for 8 months.Elanco Animal Health. Data on File. REF-29143 Elanco Animal Health. Data on file. REF-27768 ^Elanco Animal Health. Data on File. REF-23987

Brand: Seresto


Item Form: Collar


Scent: Unscented


Item Weight: 5.6 ounces


Active Ingredients: Imidacloprid, Flumethrin


Allergen Information: Allergen-Free


Unit Count: 1 Count


Color: Gray


Age Range (Description): 10 weeks and older


UPC:


Product Dimensions ‏ : ‎ 1.56 x 4.5 x 4.5 inches; 5.6 ounces


Manufacturer recommended age ‏ : ‎ 1 month and up


Item model number ‏ : ‎ CA8524001AM


Department ‏ : ‎ Insect Control


Date First Available ‏ : ‎ January 28, 2013


Manufacturer ‏ : ‎ Elanco US Inc


Best Sellers Rank: #361 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Cat Flea Collars


#2 in Cat Flea Collars:


Customer Reviews: 4.5 4.5 out of 5 stars (47,375)


Brand Name: Seresto


Unit Count: 1 Count


Age Range Description: 10 weeks and older


UPC: 724089579522


Included Components: 1 pk


Item Type Name: Collar


Manufacturer: Elanco US Inc


Model Number: CA8524001AM


Manufacturer Part Number: CA8524001AM


Warranty Description: No_warranty


Item Form: Collar


Scent Name: Unscented


Target Species: Cat


Item Weight: 5.6 ounces


Allergen Information: Allergen-Free


Active Ingredients: Imidacloprid, Flumethrin


Frequently asked questions

The Seresto Cat Collar offers protection against fleas and ticks for up to 8 months. This lessens the hassle of having to remember frequent applications.

Yes, Seresto Cat Collar comes highly recommended by veterinarians. It offers an effective and long-lasting solution to eliminate fleas and ticks from your cat.

Yes, the collar is designed to be adjustable and can be worn by cats of all sizes. It should be comfortably tight, but not too constricting. It has a mechanism to release if the collar gets trapped, to prevent choking.

The Seresto Cat Collar is designed with safety in mind. While all animals may react differently, it typically doesn't cause adverse reactions. However, should your cat show signs of discomfort, it is advised to remove the collar and consult a veterinarian.

Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.


The Seresto Flea and Tick Collar for cats are thoroughly praised by all reviewers for their effectiveness against flea infestations. Many users struggled with persistent flea problems until they found this product. A common point among reviews is that the collars work quickly - in some cases killing fleas within hours, in others, a few days. Despite its higher price compared to other treatments, users unanimously consider the purchase worth it for the relief it provides to the pets and their owners.

Pros

  • 👍 Works quickly: many users reported fleas gone within 12 hours to three days.
  • 🐱 Perfect for cats who don't like being bathed or treated with topical applications.
  • 💰 Cost-effective: despite its higher upfront cost, it's worth it for the length of effectiveness (up to 8 months).
  • 🏡 Effective for both indoor and outdoor cats.

Cons

  • 💸 Considered pricey compared to competing products, although users agree it's worth the cost.
  • 🔔 Cannot be setup for subscription purchases, so you need to remember to replace it every 8 months.

Should I Buy It?

Yes, most definitely. If you're dealing with a persistent flea problem, this product seems to be a miracle worker. It works quickly, is great for cats who dislike traditional treatments, and the higher upfront cost is justified by the duration of effectiveness.


  • Great flea and tick protection
Size: 1 Pack
I love these flea and ticked collars. I keep them on subscribe and save for every 7 months as they are recommended to be changed. At first, they seem pricey, but once you figure the monthly cost to other treatments, this is an excellent deal, especially for how effective they are. I have five indoor outdoor cats and have never had fleas in my home. I do occasionally find a tick on my cats but i'm not sure that any treatment can claim to be 100% tick proof. I have used these for years and have never had any side effects to my pets, or to the people living in my house that pet the cats. I love that there is no greasiness left on my cat like topical treatments, and I appreciate that the caller does not have a foul smell like other flea collars. They fit very snugly.I have never had a cat lose one of these collars. They are very easy to apply and trim the excess with scissors. I greatly recommend these.I like that they are effective for 7 monthsb because I would never be able to remember to put a topical treatment on every month for each of my cats. I can apply this and forget about it until my next shipment shows up with the confidence that my cats are protected. ... show more
Reviewed in the United States on May 24, 2026 by BerrySouthern

  • I love this thing so freaking much!
Size: 1 Pack
This is freaking amazing! My cat is an indoor outdoor cat. He has long fur on top of that. Before I found about Seresto, I’ve been using advantage. Advantage is pretty expensive. Four dosages and it costed me the same price as a seresto. What’s worst it only works on fleas and not ticks. I didn’t know about the no tick part until this year. As the weather gets warmer, my cat stays outside longer. He came back with one or two ticks for three days straight. I never have a flea or tick problem until now. Thats when I found out that advantage doesn’t take care of the ticks. It also doesn’t help that my cat has long fur so it’s even harder to spot them. I tried to thoroughly check his coat everyday but I’m worried that what if I miss one. Worse is what if he brings them home and gets it on the bed or something. I did a lot of digging around and see that the ones that does kill ticks are either prescribed by vets or have a relatively low ratings. Then I stumble on Seresto. I heard a lot of people didn’t like it because their cats have adverse reactions to it. I was worried an about the same thing but then say why not try it out. Ever since I got seresto, I have not seen a single tick! I checked the skin around his collar just in case his skin is irritated but so far, roughly 1 month in…no adverse reactions. It works amazing. I put it underneath his other collar and make sure that neither one is too tight. I highly recommend this especially to cats who spend time outdoor. It gives me a lot of reassurance. Helps protect not only your cat but you as well. The price is actually not bad considering that it last 8 months. That’s half the price I would have paid had I use other treatments. I do want to say that you should monitor your cat the first few days to be sure it’s safe for your cat to use. While my cat was fine with it, it could be different for you. ... show more
Reviewed in the United States on May 31, 2025 by KP

  • Don't start with generic, buy these instead!!!
Size: 1 Pack
We tried everything before finally paying $250 for 5 cat collars. My only regret, not buying them sooner. Tried generic flea collars that did nothing. Frontline cream took maybe 5% away. Within 1 day of putting the Seresto collars on, 75% of the fleas died on each cat. We flea combed mostly dead fleas. 1 month update. Cats still occasionally are scratching, and every once in a while we find a flea. I would call these collars a huge success. Cats don't mind wearing them and they have no scent. My only dislike is the lack of instructions. We cut the excess collar off, not realizing there was a loop to place the excess in. Probably user error. Highly recommend buying these! ... show more
Reviewed in the United States on September 8, 2026 by Joshua

  • IT WORKS!!!
Size: 1 Pack
If you know anything at all about house cats, you know they’re full of tenacity, and audacity. Once your indoor cat gets a taste of the outdoors, it’s just about impawsible to keep them from wanting to be outside all the time! That’s what happened with my cat The Baroness Meowtilda Von Softiepaws (street name: Tilly). Tilly slipped out the back door when I opened it to let my smelly little dogs out. Of course I freaked out thinking she’d run away and I’d never see her again. But Tilly stayed in the back yard and came inside after a few minutes. I vowed to never let her out again. But 1) she’s a cat with quintessential cat-like reflexes and is better than I am on her worst day, when I’m on my best day. 2) The audacity I mentioned earlier is STRONG in her 3) she DOES NOT like to be picked up/held, or confined in any way, and I value the use of my hands. She’s never been aggressive with me, but I prefer not to make too many waves. So keeping her from slipping outside from time to time was not a job for which I am well equipped. Over time I got more comfortable with it since Tilly always stayed close to the house, and was always in the house over night. She has never been injured on her excursions. Then, we had a big problem. Remember the smelly little dogs? Well they suddenly became smelly AND itchy! And that’s when I saw it. The dreaded flea infestation. The dogs are treated for fleas and ticks, so that meant the harbinger of the plague was feline, in species. Now imagine gentle reader, if Tilly is not the type of cat to allow cuddling, what are the chances she’s the type of cat to allow herself to be bathed with flea soap? Nil. The answer is, nil. Several essential oils sprays, and flea combing sessions later- I had finally eradicated the infestation. Unfortunately Tilly developed some harsh looking ulcers on her skin which the vet advised was due to an allergy related to the flea bites. I felt awful, but I got her ulcers treated and cleared up quickly (thankfully, because they were shocking to look at and I doubt they were comfortable). My vet recommended the Soresto Flea and Tick Collar for several reasons. She said 1) it works, 2) it’s made for cats and dogs, 3) it lasts for up 8 l months. She did say “it’s one of the pricier options…” but she swore by its effectiveness, and said it was worth it the price. Of course this had my anxiety riddled brain thinking these collars cost enough to make me have to decide between purchasing one, or paying my mortgage. Turns out the collars are about $68, and since they’re supposed to last 8 months, that breaks down to about $8.50/month, or ~.28/ day! So I bought one and decided to give it a try. If it didn’t work, I’d know for the future and I would try something else. Well, guess what? IT WORKS! There is no chemical scent to it, it’s made of a flexible rubber type material, and it’s adjustable. I thought I’d have to fight with Tilly to get the collar on her (she prefers to go au naturale), but since the collar is adjustable with a lot of extra length, it was really easy to slip it on her neck and then pull it to tighten it. It helps to have a lickable treat at the ready to occupy your cat, if they’re resistant to being collared. The collar even comes with little plastic reflectors you can attach which is great if your cat goes out in the evenings at all. Tilly scratched at her neck and the collar for the first day or so, but then she accepted it, and now I don’t think she even notices it. I haven’t had a single flea or tick on ANY of my Fuzz Butts since using this collar, and we are going on 3 years. If I had one request, it would be for whoever is in charge to make this an item you can set up as a subscription, and automatically get a new collar every 8 months. I know I forgot to replaces Tilly’s collar for about 10 months (and it still worked!), and I don’t want to take the chance of forgetting again. For now I have a reminder on my phone, along with the reminder to change my air filter and to test my smoke alarms. But it would be much easier if I could get a new one automatically. Other than that- 10/10 recommend and your fuzz butts and sanity will love you for it! ... show more
Reviewed in the United States on September 1, 2023 by Lauren

  • Good flea collar- but doesn't last 8mos.
Size: 1 Pack
I really loved this product. My cats were really sensitive to the drops so I was glad to find this product. It worked well and didnt bother them. But I have noticed that it doesn't work for 8 months anymore. I had to replace 2 months early-. (I put the reminder on my calendar.) My poor kitty has fleas. My daughter noticed the same with her dog's collar. ... show more
Reviewed in the United States on August 25, 2026 by Liberte Herin

  • Flea stress no more !!!!!!!
Size: 1 Pack
I struggled with getting rid of the fleas on my cats for a couple of months. I got topical flea treatments at the vet, cheap flea collars, and gave them flea baths. After I got these expensive asssss collars, my cats didn’t have fleas anymore. I went from bathing the cats and picking out all fleas and finding more the next day to not bathing my cats and finding ONE flea maybe every few weeks (and they’d be dead or super inactive. My cats no longer have flea poop on them either. I haven’t gave my cat a bath the past 2 months (he’s an indoor cat ) and he’s been pretty much free of fleas other than me finding a random flea every few weeks. I also had an outdoor cat that was pretty infested with fleas (my sister has him now at her house) and he’s is also free of fleas !!! These collars are the best. I bought a cheap $3 one before this and it was a waste of money. I’m so happy my cats are free of fleas these collars work wonders !!!! ... show more
Reviewed in the United States on August 31, 2026 by Paolina Gonzalez

  • Real Seresto Collars That Keep My Pets Flea‑Free
Size: 1 Pack
I have been using Seresto collars on my cats and dogs for years, and they have always worked well. There is no smell, they are non greasy, and they go on easily depending on the cat. They are simple to trim, and none of my pets have ever had a reaction or side effects. These are the real Seresto collars. I once received knockoffs from another site, and the packaging looked close but the wording was broken English and the barcode was wavy. This listing is legitimate, and the quality matches what I have used for years. My pets go in and out of the house all day to play in the yard, and we used to have flea problems. Since switching to Seresto, we have not had any issues at all. The collars last the full eight months and stay clean and comfortable. The fit is adjustable, and the breakaway safety system uses a ratchet‑release mechanism with a built‑in breaking point. As for ingredients, I know some people worry about them, but I have never seen any negative effects on any of my pets. For my household, these collars have been reliable, long lasting, and consistently effective. ... show more
Reviewed in the United States on July 27, 2026 by JJ

  • Bar none the best!
Size: 1 Pack
My cat was immune to ALL flea drops! From the most expensive down! He was miserable and still had fleas. As a last resort I ordered this collar even tho it was so expensive. Hallelujah! It worked! Took maybe 3 days but it worked! All his hair is growing back from him chewing on himself and all the (TMI) scabby areas are gone Yea, it’s spendy but supposed to work for 7-8 months so it is comparable to drops in price. I and Seamus (the cat) are forever in your debt. Thank you Seresto! ... show more
Reviewed in the United States on September 16, 2026 by Jamie

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