Seresto™ Flea and Tick Control collar for cats

It's an innovative collar that is clinically proven to provide 7-8 months of flea and tick protection for your cat. With Seresto, one collar is all it takes to give you peace of mind for 7-8 months.

Using an advanced polymer matrix, the active ingredients are stored within the collar itself. Utilising the natural oils in your pet's skin, Seresto steadily releases the active ingredients from head to tail, keeping them protected for 7-8 months. Seresto is clinically proven to kill fleas and actively repel and kill ticks through contact, so no bite is required for it to work¹.

No, you don't need a prescription to buy the Seresto Flea and Tick control collar. The collar used to be a prescription-only product meaning it was only available from vets, but it is now available without prescription, making it even easier to protect your furry friend. But it is important to make sure you are getting a genuine Seresto Flea and Tick Control collar – that’s why we recommend you purchase from your local vet practice, a high street pet retailer  or agricultural store where you can speak with an SQP / RAMA in store. If you are buying online, we recommend using one of our official partners.

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 through contact without the need for parasites to bite¹.

In the Seresto cat collar, there is 1.25g of imidacloprid and 0.56g of flumethrin.

If you have only just put the Seresto collar on your cat, it can take up to 48 hours for Seresto to kill fleas already on your cat. Once your cat has worn the collar for at least 48 hours, any new fleas jumping onto your cat should be killed within 24 hours². 

If your cat is already suffering from a flea infestation before you apply Seresto, you can use a quick-acting flea treatment too, such as Capstar: flea tablets that start killing fleas within 30 minutes and can be used in combination with Seresto. Used together, Capstar will provide quick relief by killing live fleas, and Seresto will prevent re-infestation occurring for 7-8 months.

If there is an existing tick already attached to your cat before the collar is applied, it can take 48 hours for it to be killed. We’d recommend removing any ticks that are already attached to your pets before you use Seresto. Learn how to remove ticks from cats to make sure you remove them safely.

If your cat has been wearing Seresto for over 48 hours, new ticks will be actively repelled and killed.

A Seresto Flea and Tick Control collar protects your cat against fleas for 7-8 months and against ticks for 8 months in a single application. It is recommended that you replace the collar after this time to ensure your cat is continually protected.

Not at all. The collar is odourless, so there are none of the unpleasant chemical smells you may associate with other flea and tick collars.

No. Stretching of the collar for activation is not necessary. Simply fit as instructed around your pet’s neck for 7-8 months of protection against fleas and ticks.

Seresto doesn’t work this way, so there's no need to brush or wipe the collar anywhere on your cat before applying. Simply put the collar around your cat’s neck and make sure you adjust it properly, to give you 7-8 months of flea and tick protection.

The collar is water resistant; it remains effective after a spell of rain or splashing in puddles and does not need to be removed for infrequent bathing. However, prolonged, intense exposure to water, or extensive shampooing, should be avoided as the duration of activity may be reduced. If your cats is being bathed regularly, an alternative product may be more appropriate. This can be discussed with your vet or local retail store.

Seresto is a product that works to protect cats against fleas and ticks. Although mites are within the same family as ticks, Seresto is not indicated to kill ear mites in cats.

Absolutely. The Seresto Flea and Tick Control collar can be worn alongside your cat's usual collar without compromising its efficacy, provided the Seresto collar is still in contact with the animal’s coat. 

The product is not recommended for use on pregnant and lactating queens.

The collar can be used on kittens aged ten weeks and older.

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

Cats wearing the collar should not be allowed to sleep in or on the same bed as their owners, especially children.

The Seresto Flea and Tick Control collar contains a special ‘polymer matrix’ which keeps most of the active ingredients within the collar, rather than all being on its surface. However, do not allow children to play with the collar or to put it in their mouth. For more information, watch the video on how Seresto works.

The collar’s active ingredients are bound within the collar matrix, rather than all being on the surface of the collar, however licking or chewing of the collar should still be avoided. In the unlikely event of the cat eating a collar, mild gastrointestinal signs (e.g. vomiting or diarrhoea) could be seen. If this happens, speak to your vet for advice. 

If your cat manages to get their own collar into their mouth it’s likely that it is applied too loosely. As a guide, you should be able to fit two fingers between the collar and your cat's neck.

In rare cases, cats may scratch at their collars on the first few days after fitting. Ensure that the collar is not fitted too tightly. Mild reactions such as itchiness, redness and hair loss can occur but are only reported rarely, and symptoms usually resolve within one to two weeks, without the need to remove the collar. In some cases, temporary collar removal may be recommended until the symptoms have disappeared. In very rare cases, more severe application site reactions may occur; in these instances, collar removal may be recommended. Always consult your vet if you have any concerns. 

The collar is designed with a ratchet release safety mechanism, which allows it to widen should an animal become trapped. The cat collar is also equipped with a pre-determined breaking point, so is able to snap completely under force.

There may be a few reasons why your Seresto collar may not be working for your cat. It’s important to check you have purchased a genuine collar, check that it fits correctly and ensure it is worn continuously by your pet.

If you have questions about the efficacy of the collars or are still concerned, please contact our technical services team on 01256 353 131.

Ticks may still get onto your cat’s coat when they brush past them, even when they are wearing a Seresto collar. The active ingredients work through contact, which means that ticks need to initially latch on to the pet to get exposed to the active ingredient, the product then acts to repel and kill them. Attachment of individual ticks can occur occasionally, especially in animals that live in areas with very high tick burdens. However, the vast majority of ticks will be repelled and killed before they are able to bite.

If the collar does get dirty, you can simply wipe it down carefully with a moist cloth.

A small amount of mud or dirt on the outer surface of the collar would not be expected to affect the efficacy of the Seresto collar. However, any mud that creates a barrier between the collar and your cat’s coat may impact the collar's ability to work.

If you need to remove the Seresto collar from your cat to replace it, squeeze the outer sides of the buckle at the same time as pulling from the other end or side of the collar.

Some may find it just as easy to cut the collar off with scissors before applying a new collar.

We don't recommend doing this. To provide the optimum level of flea and tick protection, the collar should be worn continuously and replaced every 7-8 months. However, if you’ve removed the collar only temporarily (e.g. during grooming), you can reapply it without any problems.

No. It's important to put a new collar on without any delay so that your cat is continually protected.

Yes, there is a Seresto Flea and Tick Control collar for dogs! The active ingredients in Seresto flea and tick control collar for dogs are the same as the active ingredients in the Seresto collar for cats.

The Seresto Flea and Tick Control collar now comes in a moulded fibre carton that, along with the outer cardboard sleeve, is fully recyclable. The carton is made with fibres from FSC-approved renewable sources and produces 70% less CO₂³ compared to the previous Seresto tin packaging. However, the inner protective pouch and the Seresto collar are still the same: the collar still provides 7-8 months clinically proven flea and tick protection in a single application.

Used collars or any remnants should be disposed of in general waste - so your usual household bin. Any packaging that's been in direct contact with medication should also go into your household waste bin. However, the cardboard outer packaging and any paper leaflets can be recycled.

In rare cases, pets may scratch at their collars on the first few days after fitting. Ensure that the collar is not fitted too tightly. Mild reactions such as itchiness, redness and hair loss can occur but are only reported rarely, and symptoms usually resolve within one to two weeks, without the need to remove the collar. In some cases, temporary collar removal may be recommended until the symptoms have disappeared. In very rare cases, more severe application site reactions may occur; in these instances, collar removal may be recommended. Always consult your vet if you have any concerns.