Seresto (imidacloprid/fumethrin)

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7 Reviews

Treatment Type: Antiparasitics
Caregiver: Do it Yourself
Seresto (imidacloprid/fumethrin) | Cat Owner Ratings | RightPet

Seresto (imidacloprid/fumethrin) is a dog and cat collar that contains two sustained-release medications: imidacloprid is a neonicinoid insecticide which kills adult fleas, flea larvae and lice; fumethrin, is a pyrethroid insecticide which repels and kills adult ticks, larvae and nymph, and protects from sarcoptic mange.

Seresto releases low concentrations of the active medications into the cat's hair and skin. Fleas and ticks are killed when they contact the active ingredients - no biting is required.


Time after administration to kill fleas. Cats: 98% effective in 6 hours.

Approved for: cats 10 weeks or older.

Also controls: chewing lice for one month; aids in the treatment of sarcoptic mange.

Comments: three quarters of pet owners apply monthly, spot-on flea products less than 3 times per year! With their long duration of activity, Seresto collars help protect pets throughout the year.

The unique polymer structure of the collar and its modern insecticides differentiate it from the ineffective flea collars from years ago. However, the duration of effective flea and tick control is reduced to 5 months with bathing or swimming more than once monthly. It stands to reason that very frequent bathing or swimming could diminish the duration of activity even further.

By Jon Plant, DVM, DACVD
SkinVet® Clinic


Some International Veterinarian Seresto Reviews

The Seresto collar is the only collar I would recommend for tick prevention

If you are wanting a collar specifically instead of an oral tick preventative, Seresto is the only collar I recommend. It is made by Bayer. I have tried it on my own pets and it was very effective. It tends to be the most cost-effective preventative on the market, but it is still not my favorite.

By RachelMuurDVM
Burlington, Wisconsin, United States

Best flea and tick collar available

Seresto collars are the most effective flea and tick collar available. For clients that prefer a collar to topical or oral flea preventatives, I always recommend Seresto over other collar brands. It is very easy to put on and lasts for 8 months, which is great for dog owners who have a hard time remembering to administer products monthly. It will kill most fleas and ticks before they get a chance to settle on dogs or spread disease.

Seresto is also very safe, with minimal side effects reported. In very few dogs, it may cause some irritation around the neck. It can get wet, but in heavy swimmers may need to be replaced more frequently.

By M Teiber DVM
Illinois, United States

8-month prevention

Seresto is a product that provides 8-month prevention and treatment of ticks and fleas on large dogs and puppies 7 weeks of age and older and above 18 lbs. It prevents tick infestations within 48 hours after application. Re-infesting ticks are repelled and/or killed as quickly as in 6 hours. It quickly kills fleas on dogs within 24 hours and continues to prevent infestations for 8 months. It also aids in the treatment and control of Sarcoptic mange. There is no need to remove collar when your pet goes swimming or gets bathed. Use under the direct supervision of a veterinarian.

By Georgina Ushi DVM
Tampa, Florida, United States

Great solution

Seresto works miracles and it is my product of choice, but, it must be used correctly, not loose like necklace because it needs full skin contact.

By DVM Ivana Vukasinovic

My favorite!

Love this collar, I use it most of the time for my dog, she's in a very high risk of tick exposure since we take a lot of walks in woods and grassy areas, she also likes water so it's always wet. I never picked up a tick of her while she was wearing this collar. My only complaint is that it's not effective for up to 8 months as it says in the brochure. For me it's 5-6 months tops. But still even for 5-6 months it's an excellent product and great value for money.

By Vuk Ignjic DVM

Long-lasting and easy to use

Seresto is a fairly new product but it is renowned for its longevity -- this collar is advertised as being usable for up to eight months, and the collar is designed so that unlike other flea and tick collars, it will still be functional even when wet. As such, it is a game-changer and there is nothing quite like it on the market, able to solve a lot of tick infestations mainly through prevention. That it lasts for eight months also means only having to replace it roughly once a year, which is great for owners and their dogs. Though it is a bit pricey, it is a very worthy investment.

By Mirava Yuson DVM

A great, easy-to-use product

Seresto is a long-lasting, easy to use flea and tick collar. It is popular among my clients that have multiple dogs as it tends to be less expensive per month than topicals or oral tablets. One collar will also typically last through the entire tick season. It has proved to be slightly less effective against ticks than some of the oral products however. Clients still choose it regardless of this due to price and duration.

By Chyrle Bonk DVM
Orofino, Idaho, United States

The best collar ever...for fleas and ticks

The successful management of sarcoptic mange usually requires parasiticidal therapy with ivermectin, fluralaner or the like; or amitraz dips, and environmental control of ectoparasites.

By L Perez

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