Keep the Seresto collar in the packaging until you’re ready to use it. Once open, remove the small plastic connectors inside the collar before using. 

Place the collar around your cat or dog’s neck and adjust, the ratchet system and loop will secure it in place. 

A proper fit means the collar can't slide over your pet’s head, but you should be able to insert two fingers between your pet’s neck and the collar. This ensures the collar is not too tight but will still stay in place. 

Cut off any excess length of the collar that extends more than 2 cm past the loop, leaving more if you have a growing puppy or kitten. 

After trimming, dispose of any remnants or off-cuts of the collar appropriately. 

For growing puppies or kittens, check the fit of the collar regularly to ensure it’s the correct tightness. 

The Seresto collar is a unique polymer matrix containing two active ingredients, which spread over the skin surface and hair coat of your dog or cat:

Sustained release technology

Seresto works similarly to a monthly topical in the fact that the active ingredients spread from the site of direct contact over the skin surface. The active ingredients in Seresto are released in low concentrations from within the collar and, thanks to your pet's skin and coat, spread from head to toes, even the tail. As the active ingredients wear off over time, a new supply is continuously replenished in low concentrations for 7-8 months. The long-lasting, 7-8 month duration of Seresto differentiates it from other flea and tick collars.

Compared to other tick and flea collars, the Seresto Flea and Tick Control collar uses innovative technology that enables it to release controlled doses of the active ingredients over a long period of time. The ingredients are transferred to your cat’s skin and coat, and spread across her entire body, keeping her protected from fleas and ticks for 7-8 months. Clinically proven to kill fleas and actively repel and kill ticks.

The Seresto Flea and Tick control collar used to be a prescription-only product meaning it was only available from licensed veterinarians, but now it is freely available without a prescription. This has made the process of protecting your furry friend even easier. 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 veterinary practice, a high street pet retailer or agricultural store. If you are buying online, we recommend using one of our official partners. View our official partners store now on our website.

Seresto is water-resistant, it can withstand your pet being bathed, shampooed and getting wet. Any of the substances that are washed up will be quickly redistributed across the coat. 

However, the duration of the collar’s efficacy can shorten when exposed to extensive shampooing and intense water exposure. Although monthly shampooing or water immersion has been shown not to shorten the duration of Seresto’s efficacy for repelling and killing ticks, the product’s flea killing efficacy can gradually decrease starting in the fifth month.

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

The Seresto Flea and Tick Control collar contains a special ‘polymer matrix’ within the collar and this keeps the largest amount of active substances within the collar so that there is a low amount on the outside. However, do not allow children to play with the collar, or to put it in their mouth.