Seresto® for cats

Seresto® for cats

Hiding from fleas and ticks isn’t an option. Seresto® for cats offers the performance you expect from a monthly flea and tick topical or pill, with the convenience of an easy-to-use 8-month collar. You read that right: One effective, odorless, non-greasy collar equals 8 months of protection.
Seresto® for Cat packaging with flea collar

Seresto®: #1 selling
non-prescription flea and tick brand*

Why choose Seresto® for cats?

Kills and repels fleas and ticks through contact — no biting required
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Provides 8 continuous months of flea and tick protection for cats
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Easy to apply, odorless and non-greasy
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Designed with your cat in mind with a two-way release mechanism

Fleas and ticks don’t stand a chance.

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Protects against: Fleas and flea larvae, ticks

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Works for: Cats and kittens at least 10 weeks of age

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Application type: Collar

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Treatment frequency: 8 months

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No prescription required

How does Seresto® work video thumbnail
How does Seresto® work?

See how the Seresto® collar helps protect your cat from fleas and ticks for 8 months.

Diagram showing how Seresto® for cats works through its release technology on an Orange Tabby.
Seresto® for cats: Truly unique collar technology

Seresto® is the leading, innovative flea and tick collar for cats that applies two active ingredients over your cat’s hair and skin surface: imidacloprid and flumethrin. This steady release of treatment is effective for 8-month protection against fleas and ticks. That's one convenient, non-greasy, odorless flea and tick collar instead of 8 monthly oral or topical treatments. Fleas and ticks are killed through contact with the active
ingredients — no biting required.

Seresto® Collar for Large Dog and Cat product packages.
Flea and tick protection reinvented

When you open the Seresto® for cats tin for the first time, you’ll notice an easy-to-use, odorless and
non-greasy collar that features reflectors as well as a ratchet release mechanism and a predetermined breaking point.

Ready to help protect your cat from fleas and ticks?

Seresto®: A flea and tick treatment different from the rest<sup>†</sup>



†Based on label comparisons.

How to apply the 8-month Seresto® cat collar

How to put a Seresto® collar on a cat thumbnail

How to apply Seresto®

How to apply Seresto® collar: Step 1 put collar on cat
Step 1
Insert the end of the collar through the buckle.
How to apply Seresto® collar: Step 2 ensure 2 fingers fit between collar and neck
Step 2
Adjust the collar around the cat’s neck without it being too tight or too loose. It should be possible to enter two fingers comfortably between the collar and the neck.
How to apply Seresto® collar: Step 3 cut off the extra length
Step 3
Pull excess collar through the loop(s). Collar length greater than 1 inch beyond the loop(s) should be cut off unless it is on a growing kitten.
How to apply Seresto® collar: Step 4 evenly put on the 3 reflector clips on cat
Step 4
Three reflector clips may be fixed permanently to the collar to increase your cat’s visibility in the dark. Evenly distribute the clips on the non-overlapping part of the collar. The clips are correctly applied when a clicking sound is heard.

Top questions about Seresto® for cats

Do Seresto® collars for cats expire?

There is no expiration date required on the packaging by the EPA for Seresto® for cats. The product should be kept in its original packaging and stored as directed on the label.

How do I apply the Seresto® collar and take it off my cat?

How to apply the Seresto® collar on your cat:

  1. Remove the collar from its packaging.
  2. Unroll the collar and remove the small plastic connectors from inside the collar, ensuring that no remnants remain.
  3. Insert the end of the collar through the buckle and loops.
  4. Adjust the collar around your cat's neck until it fits comfortably on them.
  5. Two fingers should fit beneath the collar and neck to ensure it is not too tight. Any excess length of the collar beyond an inch past the loops should be cut off unless it is on a growing kitten, where some additional length may be needed for adjustment as the kitten grows. Also, make sure the collar cannot be pulled over the head.
  6. Check periodically and adjust fit if necessary, especially if you have a kitten that is rapidly growing.
  7. Seresto® comes with three optional reflector clips that can be attached to the collar to help keep your cat visible at night. The reflector clips should be evenly distributed on the non-overlapping part of the collar.

Watch our application video for more information.

How to take the Seresto® collar off your cat:

Squeeze the outer sides of the buckle while pulling from the other end or side of the collar. Some may find it just as easy to cut the collar off before applying the new Seresto® collar.
Why can Seresto® be used on pets?

Seresto® kills fleas and ticks.

Seresto® was designed with specific ingredients at doses that are active against fleas and ticks. Studies show that fleas and ticks are highly susceptible to the combination of imidacloprid and flumethrin found in Seresto®.

The Seresto® collar works with a unique polymer matrix of two active ingredients, which spread from the site of direct contact over the skin surface of your dog. The active ingredients in Seresto® are released in low concentrations from within the collar. As the active ingredients wear off over time, a new supply is continuously replenished in low concentrations. Imidacloprid has been used in products for years to control flea infestations. Flumethrin effectively kills and repels ticks.

How do I know if the Seresto® collar I purchased is authentic?

It’s crucial that pet owners purchase real and genuine Seresto® products from authorized veterinary clinics and trusted retailers to help ensure product authenticity and performance. Find Seresto® at a clinic or retailer online or near you.

Where can I find more details about Seresto® and complete application information?

Click on the product below to learn more:

Small Dog

Large Dog


Is there a Seresto® recall?

There is no evidence in the scientific evaluation conducted for registration or the regularly reviewed pharmacovigilance data to suggest a recall of Seresto® is warranted, nor has one been requested, or even suggested by any regulatory agency. As a result, Elanco continues to stand behind the safety profile of Seresto®. It remains available to consumers as an effective way to protect pets against fleas and ticks that can transmit disease and can impact their quality of life.

See efficacy information >


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Save $5 on the purchase of any one Seresto® collar.
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