Seresto Flea and Tick Collar for Large Dogs Over 18 lbs, 1 pack



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Size: 1 Pack







About Seresto

Vet-Recommended Flea and Tick Protection

With Seresto, help your dog lead the pack by providing long-lasting 8 month protection. This easy-to-use, non-greasy, and odorless collar kills and repels fleas and ticks for 8 continuous months with daily wear. It can even help treat and control sarcoptic mange and lice. Get the performance you expect from a monthly treatment in an economical collar for convenient, effective protection.

Continuous Release for Long-Lasting Prevention

Seresto flea and tick collars work by killing and repelling fleas and ticks through contact, with no biting required. The active ingredients stored within the collar are continuously released in low concentrations, distribute over your dog's skin and coat from head to tail for effective coverage, and replenish the skin and coat with a new supply every 8 months.

Why Choose Seresto?

The Seresto collar, recommended by veterinarians, is non-greasy and helps to avoid the inconvenience of applying monthly flea and tick treatments. By repelling fleas and ticks, the collar also prevents them from biting and transmitting dangerous diseases. Additionally, the collar helps to treat and control sarcoptic mange and kill lice. Seresto also doesn't interfere with your dog's regular collar and can easily be worn simultaneously.

Protection Your Pet Can Wear

The Seresto collar is non-greasy and recommended by veterinarians. It provides convenience to every pet owner with lasting 8 month protection against fleas and ticks. Plus, Seresto works through contact which means fleas and ticks don't have to bite for the active ingredients to work. It's also available without a prescription, so it's just one less step to take care of.

A Little Water Never Slowed You Down

Seresto is water-resistant and remains effective following a shampoo treatment, swimming, exposure to rain or sunlight. However, if dogs are bathed more than once per month, the control duration is reduced to 5 months for flea control and reduced to 7 months for tick control.

About Seresto

Seresto is a leading name in the healthcare industry for over 150 years, manufacturing Bayer. Seresto repels and kills fleas and ticks for 8 continuous months in an easy-to-use, non-greasy, odorless collar. It effectively kills fleas and ticks, being veterinarian-recommended, so you can feel confident knowing that your pet is getting the protection she needs.

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  • For 8 months, it serves as an effective prevention against infection of the animal with ticks and fleas.
  • It has a detrimental effect on blood-sucking insects at the first contact, even if a tick or flea did not have time to bite your pet.
  • Does not irritate the animal with an unpleasant odor, does not stain its hair, does not leave stains on clothes and furniture.
  • There is no need for monthly procedures for treating the dog with shampoos, sprays and other means against bloodsuckers.
  • Begins to act during the first day after its use.
  • By killing ticks, fleas, lice and their larvae, the product serves to prevent such diseases as sarcoptic scabies, borreliosis, encephalitis, etc.
  • Recommended by veterinarians as a simple, effective and safe pet protection product.


If you know your pet's weight, it is easy to find the right size collar:

  • Small collars – are suitable for animals weighing less than 18 pounds with a neck circumference of 5 to 11.75 inches.
  • Large collars – are designed for large dogs weighing more than 18 pounds with a neck circumference of 10.5-23 inches.

The Seresto Large Collar is designed to fasten around the neck of any large dog and has no upper weight limit.

Water protection

The Seresto collar does not lose its properties when it gets into water or is under the sun. Your pet may swim and run on wet grass, play with sprinklers on the lawn and lie in the sun. Even so the collar will remain effective until its 8-month validity expires.

You will also be able to bathe your pet if it gets dirty, but no more than once a month. If the number of bathings exceeds the specified rate, the collar expiration date will be reduced to 5 months for fleas and 7 for ticks.

Questions & Answers

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6 Customer Questions

  • Can Seresto collar be used in combination with other flea and tick control products?

    • Answer by Seresto 09.27.2022

      Our collar can be used in combination with other flea and tick control products, but it is important to consult your veterinarian before using any new products on your dog. Your veterinarian can provide guidance on the appropriate use and combination of products to effectively control fleas and ticks on your dog.

  • How do I properly fit the collar on my dog?

    • Answer by Seresto 09.23.2022

      To properly fit the collar on your dog, adjust it to fit snugly but comfortably around your dog’s neck. The collar should be tight enough that it cannot be pulled off over your dog’s head, but not so tight that it is uncomfortable or causes choking. It is important to check the fit of the collar regularly to ensure that it is still snug and secure.

  • Can Seresto be used on puppies?

    • Answer by Seresto 08.18.2022

      Our collar is recommended for use on dogs over seven weeks of age. If you have a younger puppy, please consult your veterinarian for appropriate flea and tick control products.

  • Is Seresto collar waterproof?

    • Answer by Seresto 08.13.2022

      Yes, our collar is waterproof and can be worn even when your dog is swimming or bathing.


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4567 Customer Reviews

  • 5 out of 5

    By Amanda Grubbs on 11.26.2022

    Absolutely Recommend

    Last year, during a holiday in the mountains, I constantly removed ticks from my dog, despite the means used. This summer I have decided to buy a collar and have chosen Seresto. I see the result! The summer has passed without incidents, the ticks did not bother, and it seems that there are no fleas either!

  • 5 out of 5

    By Anissa Cameron on 11.15.2022

    Love it

    A wonderful thing! We live near the forest, so the issue of protection of blood-sucking parasites is very relevant, but the collar works.

  • 5 out of 5

    By Conrad Charleson on 11.04.2022

    Works! Lasts and stays put

    I have been buying collars for several years for my two dogs. The declared 8 months are valid; it even seems to me that it would be possible to leave these collars longer. There are no fleas, once or twice after a walk in nature I combed out ticks from the wool, but they did not have time to bite. I guess their days were numbered anyway. I allow dogs to swim in collars, but before bathing with soap I remove them, it’s more reliable.

  • 5 out of 5

    By Georgia Davis on 10.15.2022

    Keeps your dog clean

    An excellent result! I really notice the difference.

  • 5 out of 5

    By Myrtle Cameron on 10.11.2022

    It's been worth the money

    My dog lost its first collar somewhere in the forest. Then I decided that it was equipped with a special technology to unfasten if the animal was in danger, I think Boss tore it off by catching on some knot. I had to buy a second one, because I already appreciated the effect of the collar and completely trust it. I haven’t thought about fleas for a long time, only sometimes after long walks I examine Boss to make sure that it didn’t bring a tick home.