Seresto Flea & Tick Collar for Dogs - Pet360

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Seresto Flea & Tick Collar for Dogs

With its sustained release technology, the Seresto Flea & Tick Collar for Dogs is hassle-free and mess-free! Just attach and forget about monthly applications to kill and repel fleas an... Learn More

Our Price
  • Small (dogs up to 18 lbs), 1 count, 15" L
  • Large (dogs over 18 lbs), 1 count, 27.5" L


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Product Information

With its sustained release technology, the Seresto Flea & Tick Collar for Dogs is hassle-free and mess-free! Just attach and forget about monthly applications to kill and repel fleas and ticks. Non-greasy and odorless, its dual-action protection lasts up to 8 months, with a slow and continuous release of active ingredients Imidacloprid and Flumethrin. The Seresto Flea & Tick Collar is waterproof, has a safety release mechanism, and can be used on dogs and puppies 7 weeks and older.

Do I need a prescription to purchase this product? No.

What stages of the flea cycle does this products kill, suppress, or sterilize? Kills and repels adult fleas and flea larvae.

What is the main flea killing ingredient (active ingredient)? Imidacloprid.

What are the flea sterilizing or additional ingredients? Flumethrins.

Intended Use: Dogs.

What is the youngest age I can use this on my pet? At least 7 weeks for dogs and puppies.

What is the weight requirements for use? All weights

Can I use on my pregnant or lactating (nursing) pet? Consult your veterinarian before using on pregnant or nursing pets.

Is this Waterproof or Water Resistant?: Waterproof.

How long before it starts to work? Starts working immediately.

How long until maximum effectiveness is reached? Slow, continuous release provides 8 months of protection. Kills fleas within 24 hours and ticks within 48 hours of initial application. After day 2, 97.7-100% efficacy against fleas, Deer ticks, and Lone Star ticks.

What other parasites does this kill, control, or repel? Kills Deer ticks (vector of Lyme disease), American dog ticks (vector of Rocky Mountain spotted fever), Brown dog ticks (vector of Ehrlichiosis), Lone Star ticks (vector of Ehrlichiosis), and Chewing Lice.

How often should I apply or administer? Every 8 months

How is it administered (Topically, orally, or other)? Collar.

What should I do if my pet has sensitivity to this product: Individual sensitivities, while rare, may occur after using ANY pesticide product for pets. If signs of sensitivity occur, remove collar and bathe your pet with mild soap and rinse with large amounts of water. If signs persist, or become more severe, consult a veterinarian immediately. If your animal is on medication, consult your veterinarian before using this or any other product. If your dog is experiencing an adverse event, contact your veterinarian.

Small Dogs and Puppies: 15" collar
Large Dog & Puppies:
27.5" collar

  • If a tick is repelled or killed, it can't attach and transmit the organisms that may cause disease
  • Non-greasy, odorless, easy-to-use
  • Safety release mechanism prevent pets from getting stuck

Directions for Use:

1. Remove collar from protective bag immediately prior to use.
2. Unroll collar and make sure that there are no remnants from the plastic connectors inside the collar.
3. Insert end of the collar through the buckle. Adjust the collar around the dog or cat’s neck without tightening it too tight (as a guide, it should be possible to insert two fingers between the collar and the neck).
4. Pull excess collar through the loop(s) and cut off any excess length extending 1 inch (2 cm) beyond the loop(s).
5. Seresto comes with three optional reflector clips that can be attached to the collar to help keep your dog visible at night. The reflector clips should be evenly distributed on the non-overlapping part of the collar.

Cautions: Make sure Seresto fits securely. You should only be able to fit two fingers between the collar and the pet’s neck. Make sure the collar is not loose enough for your pet to put its leg through.

If your pet is not used to collars carefully observe your pet when it’s wearing a collar for the first few days, especially when the pet is not used to wearing a collar. Try using a tasty treat, toy or other activities to distract your dog or cat’s attention from the new collar.

Occasionally slight itching may be observed in animals that are not used to wearing collars in the first few days of fitting. Ensure that the collar is not fitted too tightly.

Please ensure collar is applied correctly. For complete product information and directions for use, please refer to the package insert.



by PowerReviews
Seresto Flea & Tick Collar for Dogs

(based on 1365 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


  • Effective (6)
  • Long-lasting (6)
  • Good value (5)


    Best Uses

    • Older pets (3)
      • Reviewer Profile:
      • Long-time pet owner (9)

    Most Liked Positive Review


    Highly Recommend!

    Product is very useful for preventing ticks from attaching to dogs. Flea prevention is good, but does not last the advertised 8 months. I live in South Texas where the tick's are year round...Read complete review

    Product is very useful for preventing ticks from attaching to dogs. Flea prevention is good, but does not last the advertised 8 months. I live in South Texas where the tick's are year round and carry many diseases, and would recommend this for tick prevention alone.

    Downside is that the collars tend to easily break away, and when dogs play, they can get lost. I recommend using heavy tape around the fastener to prevent this from happening if you have multiple dogs.

    Also, not advertised with the collar, but listed in the fine print, is that if dogs are bathed or in water more than once-a-month, the effectivenss will decrease to 5 months, and not 8 months as advertised...however, my dogs are in the water constantly and the collars have seemed to work the full 8 months (for ticks). We did have to begin Comfortis again on some of the dogs that do have severe flea allergies, but not all.

    Price is very affordable, comparing monthly topical tick treatment (8 treatments) plus monthly flea treatment(Comfortis pill x 8 months)...calculated over an 8 month period, this saves us about $140 per 8 months per dog.

    This is my second time ordering these colllars and will definitely (and HIGHLY) recommend these collars to anyone with a dog/cat!!!


    Most Liked Negative Review


    Testing is necessary

    Galadriel was an elf-queen of Middle-earth and the co-ruler of Lothlórien along with Lord Celeborn. She could be referred to as The Lady of Lórien, The Lady of the G...Read complete review

    Galadriel was an elf-queen of Middle-earth and the co-ruler of Lothlórien along with Lord Celeborn. She could be referred to as The Lady of Lórien, The Lady of the Galadhrim, or The Lady of the Wood interchangably. Within the realm of Lothlórien, she was referred to as simply Lady Galadriel or The Lady. When she and Celeborn were being referred to collectively, they were known as The Lord and Lady. She was originally named Artanis ("noble woman"# and Nerwen #"man-maiden", referring to her height and strength#. Galadriel is the Sindarinized version of Telerin Quenya Alatáriel, the name given her by her lover Celeborn, meaning "maiden crowned with a garland of bright radiance", which referred to her hair. The Elves of Tirion said it captured the radiance of the Two Trees Laurelin and Telperion themselves. It was greatly admired by Fëanor and may have inspired him to create the Silmarils. The name Galadhriel was used outside Lórien by the people who did not know the ancient days and Galadriel's history, confusing with the Elvish word galadh #"tree"# and the name of the Galadhrim, the people of Lórien.

    Reviewed by 1365 customers

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    Works GREAT!

    By BND

    from Lake Ozark, MO

    About Me Long-time Pet Owner


    • Effective
    • Gentle
    • Good Value
    • Long-Lasting


      Best Uses

      • Daily Care
      • Larger Pets
      • Older Pets
      • Smaller Pets
      • Young Pets

      Comments about Seresto Flea & Tick Collar for Dogs:

      I have used these now for about 7 months. I have a very large dog, a small dog and a cat all ranging in age. I will DEF be buying more! I Have tried them all! Even the pills you can get from the vet and I have found that these work best! I have no complaints and will be using them again!

      Comment on this review


      It worked great

      By Peaches

      from Peru, IN 46970, USA

      Comments about Seresto Flea & Tick Collar for Dogs:

      I have an Assie who is out all the time running in the woods and standing in the pond. She never acted like she had a flea and I never found a tick. Will buy again,

      Comment on this review


      please read and buy !!

      By philexel

      from Roseburg, OR, USA

      Comments about Seresto Flea & Tick Collar for Dogs:

      excellent product. easy to use, just put collar on cat and forget it...... good value as well, much more affordable than monthly injections or whatever. and it lasts 8 months, brilliant.

      Comment on this review


      This product really works

      By DebbieM

      from Vestal, NY

      Comments about Seresto Flea & Tick Collar for Dogs:

      When I first received this invitation to write a review, I had nothing to say. It was the middle of flea season around here and, of course, I'd seen no fleas. That part was good. Fall was the season that made me feel compelled to review this product. One of our cats actually brought into the house ticks at two different times. We found them on the floor because they had just fallen off the cat; obviously the Seresto collar was doing it's job and made him too inhospitable to live on! I'll be buying more collars next year.

      Comment on this review


      It only lasted 5 months

      By Dkbr

      from Mount Pleasant Mills, PA 17853, USA

      Comments about Seresto Flea & Tick Collar for Dogs:

      I thought it would last the whole 8 months but it didn't for my dog. I was really hoping I had found something that would last that long . Just a little disappointed.

      Comment on this review

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      Do you have questions about this product?

      get answers from real customers and in-house experts with AnswerBox.

      1 Question | 1 Answer
      Displaying question 1
      • Q:

        My dog has been on Frontline Plus for several years. Only once did I change with disasterous results. He started having seizures while he was on Advantix. It took my vet quite awhile to figure out this problem. It also cost me quite alot. Does Seresto contain any of the ingredients found in Advantix?
        Asked on 7/17/2013 by LuLu from Michigan

        1 answer

        • Staff Reviewer


          The active ingredients in K9 Advantix are Imidacloprid/ Permethrin/Pyriproxyfen. The active ingredients in Seresto are Flumethrin, Imidacloprid. Thus, K9 Advantix and Seresto do have the ingredient Imidacloprid in common, which is an insecticide.
          Thank you!

          Answered on 7/18/2013 by Pet360
      Displaying question 1

      Do you have a question about this product? 


      Active Ingredients: Acaricide (tick killing) Flumethrin and insecticide Imidacloprid.


      About Bayer Animal Health

      As a leading global animal health company, we provide innovative solutions that promote the health and well-being of companion animals and livestock and help protect them from disease and pests.

      We have a strong and consistent scientific commitment to finding solutions for current challenges and to anticipating future needs in the area of animal health. In fact, we invest about ten percent of our sales directly into research and development.

      Our products are an expression of our deep commitment to science and our dedication to protecting, curing and caring.

      Our Commitment to Companion Animals

      Dogs, cats and horses are human companions, and the part they play as they accompany us through life is growing in significance. Keeping this close relationship healthy is not just an obligation to our animal companions. Bayer is constantly developing new products and forms of administration. But we don't stop at companion animals: for millions of farm animals as well, we offer extensive protection in the form of effective and safe health care products.

      Prescription Required

      A prescription is required for this product. Once we receive your order, we’ll quickly contact your vet and ship your prescription within one business day of receiving approval.* If you have a prescription in hand, select the "mail my prescription" option during checkout.

      *UPS doesn’t ship on Saturday, Sunday, and most holidays. Note: If you are ordering medication, shipping is not available in the following states: LA

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