The unique polymer matrix in Seresto™ enables it to provide a controlled release of two proven active ingredients; imidacloprid and flumethrin, at a consistent low dose, providing continuous protection against fleas, flea larvae and ticks for 8 months, plus lice in dogs.

After application, the active ingredient, imidacloprid, spreads across your pet’s skin and coat killing fleas on contact which means the fleas don’t need to bite your pet to die, which means less stress and discomfort for your pet by minimising painful, itchy flea bites.

As your pet naturally sheds their skin and fur, tiny imidacloprid crystals are also shed into the environment, killing flea larvae. As Seresto™ flea and tick collars kill both fleas and flea larvae, this is effectively helping to break the flea life cycle.

Imidacloprid also kills lice on dogs.

The second active ingredient, flumethrin also spreads across your pet’s skin and coat killing and repelling ticks on contact, meaning there is no need for the tick to bite your pet to die. It is effective against larval, nymph and adult life cycle stages of the tick.

Seresto is water resistant*, which means there's no need to remove the collar before your dog goes swimming or has a bath; as the active ingredients remain stored in the lipid layer of the dog's skin.

Even if the lipid layer is partially washed off when the dog is shampooed or swims, the active ingredients are quickly replenished by the collar.

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

Unlike earlier flea and tick collars, Seresto™ for cats and Seresto™ for small dogs includes a 2-step safety release system.

Step 1: If the dog or cat gets caught by their Seresto™ collar, their strength will unratchet the collar, enabling the collar to quickly release. The large dog collar also includes the ratchet release mechanism.

Step 2: A pre-determined break point provides a second layer of protection so if the small dog or cat becomes trapped, their own strength will trigger a quick release.

As Seresto™ has increased in popularity amongst pet owners, it has become a target by fraudsters; looking to cash in on pet owners’ efforts to keep their pet protected from fleas and ticks by selling them fake or imitation collars.

Purchasing a fake or imitation collar will be ineffective against flea and tick protection and will cost you more in the long run.

Your pet’s health and protection are the most important things to us. So, we’ve created this page to help make it easier for you to purchase a genuine Seresto™ collar.

Genuine Seresto™ flea and tick collars can only be purchased through your local veterinary clinic, pet store or authorised online retailer. Please contact the online retailer directly to verify they distribute within New Zealand. Ask for it by name.

The unique polymer matrix in Seresto™ enables it to provide a controlled release of two proven active ingredients; imidacloprid and flumethrin, at a consistent low dose, providing continuous protection against fleas, flea larvae and ticks for 8 months, plus lice in dogs.

After application, the active ingredient, imidacloprid, spreads across your pet’s skin and coat killing fleas on contact which means the fleas don’t need to bite your pet to die, which means less stress and discomfort for your pet by minimising painful, itchy flea bites.

As your pet naturally sheds their skin and fur, tiny imidacloprid crystals are also shed into the environment, killing flea larvae. As Seresto™ flea and tick collars kill both fleas and flea larvae, this is effectively helping to break the flea life cycle.

Imidacloprid also kills lice on dogs.

The second active ingredient, flumethrin also spreads across your pet’s skin and coat killing and repelling ticks on contact, meaning there is no need for the tick to bite your pet to die. It is effective against larval, nymph and adult life cycle stages of the tick.

Seresto is water resistant*, which means there's no need to remove the collar before your dog goes swimming or has a bath; as the active ingredients remain stored in the lipid layer of the dog's skin.

Even if the lipid layer is partially washed off when the dog is shampooed or swims, the active ingredients are quickly replenished by the collar.

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

Unlike earlier flea and tick collars, Seresto™ for cats and Seresto™ for small dogs includes a 2-step safety release system.

Step 1: If the dog or cat gets caught by their Seresto™ collar, their strength will unratchet the collar, enabling the collar to quickly release. The large dog collar also includes the ratchet release mechanism.

Step 2: A pre-determined break point provides a second layer of protection so if the small dog or cat becomes trapped, their own strength will trigger a quick release.

As Seresto™ has increased in popularity amongst pet owners, it has become a target by fraudsters; looking to cash in on pet owners’ efforts to keep their pet protected from fleas and ticks by selling them fake or imitation collars.

Purchasing a fake or imitation collar will be ineffective against flea and tick protection and will cost you more in the long run.

Your pet’s health and protection are the most important things to us. So, we’ve created this page to help make it easier for you to purchase a genuine Seresto™ collar.

Genuine Seresto™ flea and tick collars can only be purchased through your local veterinary clinic, pet store or authorised online retailer. Please contact the online retailer directly to verify they distribute within New Zealand. Ask for it by name.