Seresto® flea collar for cats

Seresto® flea collar for cats

Treats: Fleas


Pet type: Cats and kittens from 10 weeks


Application type: Collar


Dosage: 8 months

Additional Info & Benefit:
Seresto® Products
Safety Data Sheet
One collar against fleas

Fleas can quickly become a problem for you and your cat if you don’t stay on top of things. But it’s easy to forget to give regular, monthly treatments. The Seresto collar for cats keeps your pet protected for 8 months at a time.

The Seresto cat collar kills fleas through simple contact, which means the fleas don’t have to bite your cat before they’re killed. Your cat will constantly receive reliable flea prevention and protection. By simply putting a Seresto flea collar on your cat, you’re preventing parasites from biting, reducing the risk of infections and transmission of flea-borne diseases. In short, Seresto is the easy and long-lasting way to help your cat stay happy and healthy.

Why Seresto® for cats?
Effective for 8 months
Kills fleas without the need for a blood meal
*See product label for details
How does Seresto work?

At first sight, Seresto might look like just another pet collar, but it’s far from ordinary. Unlike other flea collars, Seresto contains two active ingredients called imidacloprid and flumethrin that are released in low doses and spread throughout your cat’s skin and fur from head to tail. The collar creates an invisible layer of protection that kills fleas that come in contact with your cat.

How to apply
seresto collar

Remove the Seresto collar from the pouch. Remove any remaining plastic connectors on the inside of the collar. Put the collar around your cat’s neck and insert the loose end into the two loops. Cut off any extra collar length, leaving about 2 cm of the loose end beyond the second loop.

Make sure the collar is neither too tight nor too loose. Ideally, two fingers should fit between the collar and your cat’s neck.

Seresto FAQs
What is Seresto?

It’s an innovative collar that protects your dog from ticks for four months and fleas for eight months. This means your pets are protected for longer and you have less chance of forgetting to give them their protection.

What makes Seresto different from other flea collars?

Innovative technology enables the collar to release controlled, safe doses of its active ingredients over long periods of time. These are transferred to your cat’s skin and fur, and spread across your cat’s entire body to keep your cat protected from fleas for 8 months. 

What are the active ingredients in Seresto?

There are two: imidacloprid, which kills adult fleas and flea larvae, and flumethrin, which works synergistically with imidacloprid to kill fleas. Both ingredients act on contact without the need for fleas to bite.

How long does Seresto for cats take to work?

Seresto kills existing fleas on cats within 24 hours of application. Once Seresto has been on your cat for 24 hours, reinfesting fleas are killed within 2 hours.

My pet has started chewing the collar. Should I be worried?

As the vast majority of active ingredients are bound within the collar matrix and are not on the surface, they are not released or absorbed when the collar gets chewed. Nevertheless, you should prevent your cat from chewing the collar. Check to make sure the collar is not too loose. If the collar is chewed, your cat may experience mild gastrointestinal upset. We recommend consulting your local veterinarian in these cases.

When can I put the Seresto collar on my kitten?

Seresto collars can be used on kittens from 10 weeks of age. If younger kittens need flea control, they can be treated with Advantage for Cats and Kittens from birth.

Should I leave a gap between taking off an old collar and putting on a new one?

Replacing your cat’s Seresto collar immediately after removing the expired collar will ensure continuous protection against fleas.

My Seresto collar doesn’t smell at all. Does this mean it’s not working properly?

Not at all. Seresto is odourless, which means you don’t have to put up with any of the unpleasant smells you usually associate with older collars.

Can the Seresto collar be used alongside normal collars?

Absolutely. Always place the Seresto collar next to your cat’s normal collar, so that it is in direct contact with the skin/fur.

My cat is scratching at the collar, causing redness and irritation. What should I do?

If your cat isn’t used to wearing a collar, there is a chance that your cat might develop mild reactions such as scratching, redness and hair loss under the collar. These symptoms usually occur within the first one to two weeks of collar application and resolve soon after, without removing the collar, as your cat gets used to wearing it. In some cases, temporary collar removal may be recommended until the symptoms have disappeared. Please consult your vet if the symptoms persist.

What happens if my cat gets her collar stuck on something?

Seresto is designed with a double safety-release mechanism. In the unlikely event of your cat being trapped, the collar will widen or open, allowing for a quick release. The collar is also equipped with a predetermined breaking point for additional safety.

How often should I check the fit of the Seresto collar on a growing kitten?

Kittens grow at different rates, and we recommend checking the collar daily or every second day and readjusting if necessary. Watch the video above to see how to fit your Seresto collar properly, and always follow the guidance provided.

How should I dispose of a Seresto cat collar?

Used collars or any remnants should be disposed of according to the label.

Pet Type
Approval Code
PD - 01730
Master Brand
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