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What is Seresto Flea and Tick Collar?

Seresto boasts one of the safest and longest lasting flea and tick protection. Your cat or dog wearing a Seresto collar is going to be protected from picking up fleas and ticks for up to 8 months.

Topicals can get messy and orals are hard to administer. Seresto collars are non-greasy and odorless, they work just like a normal pet collar. Additionally, there is safety release mechanism in the small dog and cat collars which prevents strangulation if the collars become caught or tangled.

It is available in three sizes: large dogs over 18 lbs, small dogs up to 18 lbs, and cats of all weights.

parasites seresto protect against in dogs and cats


  • 8 continuous months of protection against fleas and ticks
  • Kills fleas before they lay eggs
  • Prevents tick infestations within 48 hours after application
  • Treats fleas (including larvae), ticks, lice and sarcoptic mange in dogs
  • Treats fleas (including larvae) and ticks in cats
  • Water-resistant
  • Non-greasy, odorless, convenient
  • Break-away feature on the small dog and cat collars
  • No more reminder for monthly applications

Who are Seresto collars for?

For dogs over 7 weeks of age or older and cats over 10 weeks of age.

What are the active ingredients in Seresto?

Each collar contains imidacloprid and flumethrin.

How do Seresto works?

seresto sustained release technology

What are the side effects?

Some of the most common adverse reactions are:

  • Skin irritation
  • Hair loss
  • Vomiting
  • Convulsions

What special precautions are there?

Seresto collars should not be used on puppies younger than seven weeks old or on kittens younger than ten weeks old. If ticks are present on your pet when the collar is applied, they need to be removed manually.

Wash hands thoroughly with soap and water after fitting the collar. Contains small parts thus present choking hazard. Not intended for use on humans.

Who manufactured Seresto?

Bayer Animal Health

Seresto Flea Collar

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Seresto Flea Collar for Small Dogs
Seresto Flea Collar for Large Dogs
Seresto Flea Collar for Cats

    5 out of 5 stars
    • 5 star 96%
    • 4 star 4%
    • 3 star 0%
    • 2 star 0%
    • 1 star 0%
    Seresto Collar Really Does Kill Fleas and Ticks
    I live in a wooded area and my cats love to wander around, bringing back in with them fleas and ticks of all sizes and types. They were killing me so I know they weren't welcome on my cats. Seresto collars takes care of them all! Sometimes a tick falls off a cat but they're always dead and I just don't see fleas, dead or alive, any more. Ordering from Petbucket saves me so much money. At my vet's, they're $80. At my favorite online food and pet supplies, they're $56. Times four, I'm saving so. much. money. Thank you, Petbucket!
    Jina Yu
    Amazing product!
    Have been used from April to October and haven't found any bitten spots on my dog! Strongly recommend :)
    Seresto Large Dogs
    Best prices around! Shipping takes a while but totally worth It!
    C. Mitchell
    Seresto Review
    Seresto collars have kept our Labrador Retriever flea and tick-free since we have been using it!
    K. Serrano
    Free of fleas
    Very pleased. It was recommended by a fellow dog rescuer. All itching and signs of fleas disappeared within a day!