What are the different Seresto collar sizes?

What are the different Seresto collar sizes?

All dogs and cats should be protected from fleas and ticks. These pests can attack at any time of the year, including during winter. Our latitude does not expose them to extreme temperatures, they rage 365 days a year, even if the intermediate seasons such as spring and autumn are more favorable to them. Seresto offers various ranges of anti-flea and anti-tick collars that are suitable for both dogs and cats. Here's how to choose the Seresto collar size.
seresto large dog collar
seresto small dog collar
seresto cat collar

Small dog collar size 

The Seresto pest control collar for small dogs is intended for animals weighing less than 8 kilos. It measures 38 centimeters. It can be worn from the age of 7 weeks. 

Collar size for medium or large dog

The Seresto pest control collar for medium or large dogs is intended for animals weighing more than 8 kilos. It measures 70 centimeters. It can also be worn from the age of 7 weeks.

Choosing the right size for your Seresto dog collar 

You choose the size of your dog's Seresto collar according to its weight, in order to respect the dosage which is calculated per kilo. We commonly use the name “small dog” or “large dog” collar, but it is the weight that you must be interested in before the size.

A small, stocky dog ​​(bulldog or Welsh corgi cardigan style) may need a Seresto 'big dog' collar, while a larger but wasp-waisted dog (whippet style) will need to use the Seresto 'small dog' range. . 

Some examples of dog breeds

Dogs under 8 kg 

  • Chihuahua
  • Maltese
  • Yorkshire
  • Pekingese
  • King Charles Spaniel
  • Fox terrier
  • Dachshund
  • Carlin
  • cairn terrier
  • Jack Russel

Dogs over 8 kg 

  • Welsh corgi cardigan
  • Bullterrier
  • Brittany Spaniel
  • Beauceron red bottom
  • Setter Gordon
  • Husky
  • Labrador
  • Dalmatia
  • Braque d'Auvergne
  • Australian shepherd

The cat version of the Seresto collar

The cat version of the Seresto collar is only available in one size: 38 centimeters long. It contains the same active ingredients as the dog version, but at different dosages. It is intended for all cats, from the age of 10 weeks. 

Properly position the Seresto collar

Adjust the Seresto collar so that you can easily fit 2 fingers between it and your dog's or cat's neck. If necessary, cut the superfluous part to prevent it from hanging in the void. 

how to put on the Seresto collar
Photo: Courtesy Bayer

Once the collar is positioned, make a movement against the hair so that it comes into contact with the animal's skin to better distribute the pest control product over the entire body. 

Its anti-flea and anti-tick action

Broad spectrum

The Seresto collar contains two active substances — imidacloprid and flumethrin — which act on the nerve cells of the parasites. Their synergy is equivalent to a veterinary drug that operates on a broad spectrum including ticks, fleas and biting lice, whether their favorite prey is a cat, a small dog or a large dog.

duration of protection Seresto collar
Photo: Courtesy Bayer

Regardless of the stage of evolution of the parasite

The Seresto collar affects ticks and fleas, whatever their stage of development. It prevents the development of larvae because it kills flea and tick larvae. It also eradicates adult fleas and ticks.

Long-lasting, preventive and curative

The treatment spreads gradually over 8 months. At the end of this period, the collar should be discarded and replaced. It acts in prevention, by dissuading the parasites from coming on the animal, but also attacks those which would have nevertheless settled in its coat by killing them. 

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