SERESTO Flea & Tick Collar for Cats, 2 Collars (16-mos. supply) -

Seresto Flea & Tick Collar for Cats

By Seresto
Rated 4.1145 out of 5 stars

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About This Item


  • Veterinarian-recommended prevention treatment kills fleas and ticks on cats and kittens of all weights and 10 weeks of age and older.
  • Starts to repel and kill fleas within 24 hours of initial application and re-infesting fleas within two hours; works on contact with no painful biting required.
  • Also repels and kills ticks within 48 hours of initial application and re-infesting ticks within six hours; works on contact with no painful biting required.
  • Easy-to-use adjustable collar is odorless and non-greasy; quick-release feature and visibility reflectors provide extra safety.
  • Water-resistant formula continues working for up to eight months, even after bathing and sun exposure.

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Play Video: Learn More About Seresto From Our Team of Experts
Learn More About Seresto From Our Team of Experts

Important Information

Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.

About Seresto

8-Month Protection for 9 Lives

Give your cat the long-lasting protection of Seresto. This easy-to-use, non-greasy, odorless collar kills and repels fleas and ticks for eight continuous months with proper use, so your feline has protection from these biting pests. Get the performance you expect from a monthly topical treatment in an economical collar for convenient, effective protection against fleas and ticks.

Continuous Release for Long-Lasting Prevention

With Elanco, fleas and ticks are killed through contact, with no biting required. The active ingredients stored within the collar release in low concentration with daily wear and are distributed over your cats skin and coat from head to tail for effective protection. As the active ingredients wear off over time, the collar continuously replenishes the skin and coat with a new supply, for 8 continuous months.

Why Choose Seresto?

The veterinarian-recommended Seresto collar is non-greasy and helps avoid the inconvenience of applying monthly flea and tick treatments. It's easy to adjust for a secure fit and kills and repels ticks too. This is important because if a flea or tick is repelled, it cannot bite and transmit disease. Plus, the collar is designed with a ratchet-release mechanism and pre-determined breaking point.

Is Seresto the Right Choice for your Cat?

If your cat is always on the go or dislikes topical and oral medications, then the Seresto collar is a great option to help keep them protected. The Seresto collar provides pet owners with a convenient flea and tick preventative option that works continuously for eight months, eliminating the need for monthly reapplications.

Protection Your Pet Can Wear

Seresto brings convenience to every pet owner with lasting 8 month protection against fleas and ticks that's totally wearable. Plus, Seresto works through contact which means fleas and ticks don't have to bite for the active ingredients to work. It's also available without a prescription, so it's just one less step to take care of.

About Elanco

Elanco is manufactured by Bayer, a leading name in the healthcare industry for over 150 years. Elanco kills and repels fleas and ticks for eight continuous months in one easy-to-use, non-greasy, odorless collar. It effectively kills fleas and ticks and is veterinarian-recommended, so you can feel confident knowing that your pet is getting the protection she needs.

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Questions & Answers

51 Customer Questions

Are these collars manufactured in the USA
Answer by AndreaGJan 20, 2023
This product is made in Germany.

how long until all fleas are gone ?
Answer by ChewyOct 02, 2017
This can vary depending on how infested your pet is. The treatment activates by the oil from the cat's skin so as soon as the pet begins to wear the collar, it will begin to work.

Does it repel pests away, or do they have to land on cat and wait to die???
Answer by ChewyJul 07, 2017
There are 2 active ingredients. The flumethrin repels and kills ticks, larvae and nymphs. The imidacloprid controls fleas. As it works through contact, the fleas and ticks on the cat will die but fewer will land on your feline friend given the repelling property.

Does this Seresto collar also kill flea eggs?
Answer by ChewyJul 14, 2017
Seresto kills existing fleas within 24 hours, killing and repelling fleas before they lay eggs.

ReviewsWrite a Review

Rated 4.1145 out of 5 stars
3057 Reviews
Would recommend to a friend

3057 Customer Reviews

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Rated 1 out of 5 stars
By Jenn on Jan 31, 2023

Doesn’t work

We have 2 indoor cats and a dog that goes out in the yard. All three have these collars and yet they still have fleas. I’ve been washing their bedding daily and vacuuming(tile floors) almost daily. We also have leather furniture and I cover the beds with a top sheet that I change daily. I gave capstar (highly recommend) to all 3 pets which kill the adult fleas for 24hrs. But our dog picks up more fleas as soon as the capstar wears off. These aren’t nymph fleas either. They are full grown adult fleas straight from the yard. I understand how flea cycles work and it can take months to break, but I think if this collar worked, the dog wouldn’t pick up more fleas from going outdoors. I also think the cats wouldn’t get the fleas since they’re wearing these collars and they don’t go outside. We’ve had excellent results with Bravecto and we’re going back to it. I also didn’t need to wash and vacuum while my dog was on Bravecto. Nor did my cats need flea meds during that time.

Rated 5 out of 5 stars
By Sahara on Feb 1, 2023

Singlehandedly Fixed Issue

I noticed fleas in my home and within a couple of weeks, I could no longer walk on the carpet without my legs being peppered with them. I had bites, my cats had bites, none of us were comfortable. I tried other flea medications and treatment products but they didn't do anything. The Serresto collars have been on for about a week now, and I can walk on the carpet without a single flea jumping on my feet. I have found dying fleas as well. This product works great and my babies are much more comfortable now. It doesn't seem to irritate them either which was my only concern with the product!

Rated 2 out of 5 stars
By jama on Jan 30, 2023

always worked before

I used to take my cats on walks around our yard to get their energy out. As they got older, we stopped so it wasn't necessary to take them out so I hadn't worried about fleas/needs these collars for a while. Recently, we were adopted by a semi feral cat that has decided he likes to come indoors. I noticed a couple fleas on him despite his regular treatment and decided we would go back to this collar as I never had issues with it before. He hasn't even had it on a month and I found a couple more fleas on him - and as its been cold out, he rarely even goes outside.

Rated 5 out of 5 stars
By evee on Feb 1, 2023

What a life saver!!!

I’d be having horrible troubles with fleas this year. They’ve been relentless and my indoor cat somehow got them. For months we had tried everything- flea collars, flea baths, sprays, daily combing, etc. I heard that this was the ONLY flea collar that actually worked, and they’re right! Within 48 hours I haven’t seen a thing on my sweet girl. We can finally cuddle in bed again <3

Rated 5 out of 5 stars
By Catmommy17 on Dec 27, 2022

Best Flea Prevention Ever!

I have two indoor cats, but we live in apartments and fleas were getting in from neighboring units. I tried literally every single flea treatment under the sun, and within a couple weeks, they always came back. My vet suggested looking into Seresto collars, and I was very hesitant about a collar helping - especially when I saw the price tag... But I decided to give it a go anyway, and I'm SO HAPPY that I did! I put their first Seresto collars on about 2 years ago, and I have never seen another flea since then. They are the only thing that truly work! The initial investment seems expensive, but when you do the math ($63 divided by 8 months of use, you're only paying $7.87 a month for the best flea preventative on the market) Couldn't recommend Seresto collars enough!

Rated 5 out of 5 stars
By momoflunaandmeeko on Dec 27, 2022

Sayonara fleas

There is no flea treatment compared to these collars, it is certainly worth coughing up the money for if you never want to see fleas again. I have been consistently shampooing and combing my cats only to see fleas dwindling, but not disappearing. About 4-6 fleas would come off each of my cats with the first few comb-throughs each day. I put these collars on my two cats last night, and fleas were jumping off within the hour. By today, I’ve combed them both thoroughly, and only found a single, half-dead flea between the two of them. It’s exciting to see my kitties feeling more comfortable. They’ve had an itchy couple of months, I’m so happy they can finally find relief. Thank you, Seresto!

Rated 2 out of 5 stars
By Stephanie on Dec 19, 2022

Does not work nor last

Received 2 collars at the end of October. I vacuum and wash blankets regularly in my house. We have been having a flea problem so I was hopeful these would help, but this time they did not seem to do much after the first few weeks. Starting around Thanksgiving, I noticed my cats were scratching more frequently and had flea dirt in their fur. I started flea combing them and found a few fleas, which I killed. Every week I flea comb them and find more fleas on them which means these collars are not working. One of my cats leaves flea dirt wherever he lays at this point which means this product is not working. The claim of 8 months is nowhere near true when it lasted less than a month for both of my cats. Was hopeful that this would resolve the flea problems, but it hasn't, which has left me quite disappointed. :(

Rated 5 out of 5 stars
By Luke on Jan 9, 2023

Flea Collar Works Great

Definitely recommend, had fleas on my cats for about two months and tried removing them with baths, flea combing, and flea killing spray but none of them worked. Put this collar on and within a week there have been zero fleas found in there fur. Make sure to clean the house after putting the collar on because a lot of the fleas jump off the pet and look for a new host. This is a perfect time to vacuum and wash all bedding/clothes.

Rated 1 out of 5 stars
By kait on Jan 6, 2023

Did not help with me

Just wanted to share my experience. I had a friend come to my house in the beginning of 2022. I knew she had fleas and had sprayed my house with flea spray. My cats had seresto collar on. But as of today 1/6/2023 I am still fighting with the fleas. I've flea bombed my apartment 5 times in this time frame. I'm contently doing laundry and spraying flea killer. If anyone has advice i'll be happy to take it.

Rated 5 out of 5 stars
By Marti on Jan 10, 2023

Really works.

This collar really works on my cat except she got it in her mouth and my son saw her and cut the collar so I have to order another one. My fault. She got away from me when I put it on so I let her go thinking it was tight enough but it wasn't. I would not use anything else. It does the job and no side effects.