Seresto is an innovative collar that protects your cat from ticks and fleas for up to eight months. This means that you don’t have to worry about more frequent applications of flea and tick treatments, and there is no risk of forgetting to do so.

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 her entire body to keep her protected from ticks and fleas for up to eight months

There are two: imidacloprid, which kills adult fleas and flea larvae; and flumethrin, which repels and kills all life stages of ticks. Both ingredients act on contact without the need to bite.

Ticks may still grab onto your cat’s coat when she brushes past them, even if she’s wearing a Seresto collar. The active ingredients work on contact, which means the ticks need to grab onto the fur to get exposed to the active ingredient. However, once they have climbed on, the ticks will fall off and die. You may therefore sometimes also see ticks tangled in your cat’s fur.

As the vast majority of active ingredients are bound in the collar matrix and not on the surface, they are not released or absorbed when the collar gets chewed. If any, mild gastrointestinal signs may be seen. Nevertheless, you should avoid chewing,and if your cat manages to get her own collar into her mouth it’s likely that it is applied too loosely. Ideally two fingers fit between the collar and your cat’s neck.

It’s safe for use on kittens aged 10 weeks and older when used as directed.

No. It's even important to put it on without any delay to assure a continuous protection of your cat.

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 flea and tick collars.

No. Stretching the collar for activation is not necessary. Seresto’s efficacy against fleas and ticks is reached within 48 hours after application of the collar to your pet.

Absolutely. Seresto can be worn alongside your cat’s usual collar without compromising its efficacy, as long as contact with hair and skin is evident.

If your cat isn’t used to wearing a collar, there is a slim chance that she might develop mild reactions such as scratching, redness and hair loss. These symptoms usually disappear within one to two weeks, 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. In rare cases in cats, application site reactions such as dermatitis, inflammation, eczema or lesions may occur and in these instances, collar removal is recommended. Please consult your vet if the symptoms persist or become more severe.

We are not aware of mud having an impact on the release of the active ingredients in Seresto and hence its efficacy. If the collar does get dirty, you can simply wipe it down with a moist cloth.

Seresto has not been specifically tested with such items, so we do not recommend attaching accessories to your cat’s Seresto collar, especially if such accessories cover the collar’s surface.

Seresto does not need to be removed when a cat gets wet or is bathed. The active ingredients are contained in the collar matrix and will not be released into water. They spread through the lipid layer of the cat's skin and hair and even if this lipid layer is partially washed off by bathing, Seresto will quickly replenish the active ingredients and the pet will be protected again.

However, prolonged, intense exposure to water or extensive shampooing should be avoided as the duration of activity may be reduced.

Seresto is designed with a double safety-release mechanism. In the unlikely event of your cat being trapped, the collar will widen when she gives a hard pull, allowing for a quick release. The collar is also equipped with a predetermined breaking point, so a harder pull will break it.

Kittens grow at different rates and we recommend frequent checks of the collar and readjustment if necessary. Watch the video above to see how to fit your Seresto collar properly, and always follow the guidance provided.

This hasn’t been tested and it might have an impact on the level of protection your pet receives. Therefore we strongly discourage you from doing this. For the best flea and tick protection, Seresto should be used continuously and ideally all year round. However, we do not see any problem if you temporarily need to remove the collar (e.g. during grooming).

Used collars or any remnants should be disposed of in accordance with local requirements. The product should not enter water courses.