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Seresto Flea and Tick Collar for Large Dogs

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Seresto Flea and Tick Collar for Large Dogs


In Stock. Usually Ships within 24 hours.

Shipping weight = 0.25 lb.


Product Summary:

Seresto Flea & Tick Collar for Large Dogs
The performance you expect from a topical flea and tick treatment, in a non-messy, easy-to-use collar

The Seresto® Flea & Tick Collar for Small Dogs is an easy-to-use, effective way to kill and repel fleas and ticks. The innovative Sustained Release Technology offers odorless and non-greasy protection for up to eight months. It begins to kill fleas within 24 hours and ticks within 48 hours of initial application.

The Seresto® Flea & Tick Collar is for large dogs and features a 27½-inch, easy-to-use, no-hassle, waterproof collar size. It can be used by puppies seven weeks and older. It kills deer ticks, American ticks, brown ticks, and Lone Star ticks, as well as chewing lice. The dual action protection provides a continuous release of two active ingredients: Imidacloprid controls flea infestations, while Flumethrin effectively repels and kills ticks. The combination works like a monthly topical flea and tick treatment, yet is designed to slowly release the ingredients in low concentrations for eight months.

Did you know? How to Confirm Your Dog Has Fleas

Item Specifications:

Special Safety Feature:
The collar is designed with a safety release mechanism, where in the unlikely event the dog is trapped, its own strength is sufficient to widen the collar and offer a quick release. Because the collar is equipped with a predetermined breaking point, a hard pull triggers the breaking of the collar at this point.

Directions for Use:
To ensure the easy to use waterproof collar is applied correctly, read the complete directions for use found in the package insert.

  • Once you are ready to fit the collar to your dog, remove from protective bag immediately prior to use.
  • Unroll collar remove the plastic connectors inside the collar, ensuring that no remnants remain.
  • Insert end of the collar through the buckle.
  • Adjust the collar around the dog’s neck without tightening it too tight (as a guide, two fingers should fit between the collar and the neck).
  • Pull excess collar through the loop(s) and cut off any excess length extending one inch beyond the loop(s).
  • 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.
Downloadable Resources
Item Number Model Number UPC
400317 83857960 724089579607

Product Reviews by Customers

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Browse 20 questions Browse 20 questions and 113 answers
Why did you choose this? Store
it works
Chris B on Jan 5, 2019
Because they work. We live in an area where there is a tick problem and the dogs never have gotten a tick with these collars. Best investment. Plus you don't have to remember to put on topical meds.
Christine h on Nov 13, 2018
it works
Chris B on Jan 5, 2019
goods items,fast shipping
thank you
Tbkent T on Nov 21, 2018
Because they work. We live in an area where there is a tick problem and the dogs never have gotten a tick with these collars. Best investment. Plus you don't have to remember to put on topical meds.
Christine h on Nov 13, 2018
used them before and they work
ellen l on Nov 1, 2018
product works well on my dog.
James P on Nov 1, 2018
trying for first time
Susan P on Oct 30, 2018
I have used this product in the past and it has worked very well.
Susan L on Aug 10, 2018
actually keeps fleas off
Janine H on Jul 31, 2018
recommend by by vet
Carol P on Jul 10, 2018
Only practical solution...
NANCY B on Jun 12, 2018
Easy and effective for at least 6 months. No monthly dosing to remember
Kelley H on Jun 12, 2018
My Boxer is alllergic to spot on pesticides, and this works for her, and works for the entire 8 months
Janet M on Jun 3, 2018
We had gotten this from the vet previous 2 years and it works very well.
Wallace P on May 4, 2018
Have used these for at past couple years and they were successful. He hates having the meds squirted on his back. this is easy-peasy.
MARY B on Apr 22, 2018
Because it works....this is the third year to buy Seresto!
Carol S on Mar 14, 2018
I have used Seresto collars since they first came on the market. They work great, just put them on and forget about fleas and ticks.
Lorell F on Mar 14, 2018
It works great and I don't have to remember to apply flea and tick medicine. It also works if my dog goes swimming or takes a bath without having to remove the collar. I all I have to do is put it on my dog in the spring and no worries all summer.
DIANE W on Mar 14, 2018
This collar worked wonderfully for my golden retriever. Time to replace it.
Cindy P on Mar 7, 2018
works well easy to use
IVAN M on Mar 2, 2018
First time user
carla m on Nov 17, 2017
It works
Diane W on Nov 6, 2017
These collars do the job and last a long time.
Beth J on Oct 20, 2017
it works!
Linda K on Oct 20, 2017
Have used & I'm very pleased results.
MaryAnn J on Oct 13, 2017
Friend recommendation
Robin K on Sep 5, 2017
Best tried in 10 years
R.W. M on Jul 26, 2017
I have been using this product on all my animals(5 cats and 3 dogs)(product appropriate for the animal) for 2 years.
This is the very best flea/tick control product that I have ever used.
Mary T on Jul 16, 2017
works for my dog
Patti F on Jul 11, 2017
The only flea and tick product I have found that works, and it does work for eight months. The fleas in TN have been awful for the past two or three years, no problems since using this collar!
JILL C on Jun 29, 2017
My groomer referred me to try thsi and we have been pleased with the results.
Michael M on Jun 21, 2017
Donna B on Jun 15, 2017
I bought this collar last year and it seems to work great. seven months of wearing this collar and after several baths it is just losing its effectiveness.
beverly K on Jun 13, 2017
Tick season is going to be worse than ever in PA the soresto collar is a must to repel fleas and ticks and protect our dog. This is our third year using soresto collars
PATRICIA S on Jun 7, 2017
want to protect my dogs for the whole flea season.
terri P on May 2, 2017
I have used Seresto collars for the past few years and am very happy with them.
Lorell F on Apr 22, 2017
I have used these since they came out. They work, have not had any problems.
Dorothy D on Apr 1, 2017
have used it int he past and does a great job!
LInda L on Mar 31, 2017
Julie F on Mar 24, 2017
Doctor recommended it.
Chelsea G on Feb 28, 2017
I live in a rural area on acreage and have used this collar with great success on two of my dogs.
KIMBERLY A on Feb 23, 2017
This is the only flea prevention that I could see work before my eyes in just a matter of days. Wonderful product and will use this for ever
Laurie L on Feb 17, 2017
It's great and lasts for 8 months
GERALDINE M on Dec 26, 2016
Neat, clean, safe, long-lasting...can't beat this product.
Edward L on Oct 3, 2016
This item has been recommended to me by family and friends. They tell me it really works.
Dianne C on Sep 15, 2016
Best tick repellent we have purchased, no irritation or itching either.
dan m on Aug 25, 2016
Same product as in stores and almost half the price.
just mike on Aug 5, 2016
This is the best protection I can find for my dogs,it really seems to work.I know its a little high but it lasts sooo much longer than other methods.
Lori P on Aug 4, 2016
used it last year and loved on a farm and it works great for outdoor and indoor pets
jana s on Jun 29, 2016
Seresto is a great product that we and a few other farmers in our area use for our working dogs. It keeps the fleas and ticks off the dogs and also out of our homes!
Kathleen C on Jun 10, 2016
Works well
Angelique R on Jun 9, 2016
goods items,fast shipping
thank you
Tbkent T on Nov 21, 2018
used them before and they work
ellen l on Nov 1, 2018
What size coller would a 100 pound dog wear ?
A shopper on Mar 8, 2016
BEST ANSWER: Large. They are adjustable.
Does it repel ticks? Or does it kill ticks? It's a collar right?
Melinda R on Apr 20, 2014
BEST ANSWER: I'm not sure if it kills ticks or not. I live in town and have never had a tick problem, just lots of fleas. Occasionally I have taken my dogs to a friend's house out in the country (tall grass and woods)and they never brought back any ticks. This friend uses the Seresto collars and states "when placed on a tick infested dog, the ticks fall off within 3 days and don't return as long as the collar is worn and replaced as directed." Since my pets have been wearing the seresto collars we have not seen any fleas or ticks on pets or in the house. We haven't seen any outside, either, but we don't look for them out there. We've been very satisfied with this product. Cat collars, too. I wish the cat collars had an elastic portion so the cat could get out of the collar if it got hung up on something.
what size collar would a 44 pound dog wear?
A shopper on Feb 29, 2016
BEST ANSWER: The large. The small is for dogs and puppies up to 18 lb.
are there any side effects?
A shopper on Jul 8, 2016
BEST ANSWER: I've used them 2 years now and have a couple of dogs that play hard with each other - chewing on each other's necks - no ill effects even doing that. I have them on 4 different types of dogs (Aussie, Boston, Boxer and Basset mix) and no ill skin effects either. I like these better than the top spot products!
Does it work on a longer haired dog? We have a newfie/lab mix. It says it must rub the skin and with her hair, it may not.
A shopper on May 4, 2018
BEST ANSWER: I used it on my Native American Indian Dog, which has hair like a long haired Shepard, or Husky, with thick under coat. It was the only thing that worked for the ticks we have. We are rural, and have lots of deer, so she was exposed to lots of ticks. It also keep her flea free. Loved it!!
seresto flea collor fir difs over 100 lbs?
A shopper on Mar 4, 2018
BEST ANSWER: Plenty of room. I use these collars on all my dogs (#10 to #150) even cut off a bit on the big guy....great product...much success for flea issues, and I put them on in April and take off in November (live in VA)
Can I have my dog sleep with me if he is wearing this collar??
I read a couple of places that you can't..and a couple of places that you can.
Please advise.
Bobbi on May 27, 2017
BEST ANSWER: First of all I don't recommend product I trusted in it and my dog for the first time ever he got a bad case of fleas. I found the best product is bravecto. As far as answering your question I would say no. Save your money don't buy that product. With bravecto he or she could sleep with you. John
Does Serestro keep fleas off the animal or kill them once they get on them?
Mary B on Aug 16, 2016
BEST ANSWER: This will kill as well as repel fleas and ticks. It uses two medications.
Imidacloprid – controls flea infestations
Flumethrin – effectively repels and kills ticks

It begins to kill fleas within 24 hours and ticks within 48 hours of initial application.
Is it toxic for other dogs playing that might grab collar with there mouth?
Debbie C on Mar 8, 2016
BEST ANSWER: Don't know. I have the same question with any other flea collar. I think it may be a function of how much hair the dog has where he has the collar. I have an Australian shepherd, who has a lot of hair My other dog seems to get a hold of his hair and not the collar he wears when the two are wrestling.
What’s the weight for the large?
A shopper on Mar 4, 2018
BEST ANSWER: It reads for dogs over 18 lbs
I have bought 3 seresto collars and my dog still has fleas? Can you explain
Tina N on Jan 2, 2019
BEST ANSWER: We have never had an issue. Is the collar the right size? Does it have good contact with the dog's skin? We have a short haired dog now but in the past longer hair and I am not sure it would work as well. Other users can chime in on this. And finally, do you have a really bad flea infestation in the bedding/house/dog house? If so you need to address that in addition to the collar use.
my dog weighs 18.2 lbs. they sold me the collar for up to 18 lbs. will that work?
A shopper on Jan 8, 2017
BEST ANSWER: I would assume it should be fine. My 2 little ones are 10 and 15 lbs. But it's mostly the size of the collar.
can you use a large collar on a small dog ?
A shopper on Oct 30, 2018
BEST ANSWER: The large size is for dogs over 18 lbs.
I have 5 lb. Chihuahuas. Is the Seresto in smaller size & cheaper?
A shopper on Jul 4, 2018
BEST ANSWER: The small is for pets up to 18 lbs.
140 pound dog which flea collar?
cindy H on Apr 20, 2018
BEST ANSWER: Large, since there are only two sizes.
I have corgi dogs that weight 23 to 25 lbs what size collar do I buy?
A shopper on Mar 27, 2018
BEST ANSWER: I would advise on purchasing a large size collar as the small only goes up to 18 lbs in weight.
My dog weighs 48lbs with a 18" neck do get large or small collar??
A shopper on Feb 10, 2018
BEST ANSWER: You would need the large collar as the small is only 15".
My dog weighs 19 lbs. should I purchase the collar for small dogs or the one for large dogs?
Jean M on Feb 2, 2018
BEST ANSWER: Since that is so close to the weight limit of the small dog, I would double check with your veterinarian.
Is there a Soresto for medium dogs?
A shopper on Mar 9, 2016
BEST ANSWER: No only small up to 18 pounds and large over 18 pounds. I know it seems strange but that's how it was last year when I bought 3. They work great and they will kill ticks too. Time for me to order 4 new ones!!