Seresto Large Dog Vet-Recommended Flea & Tick Treatment & Prevention Collar for Dogs Over 18 lbs. | 8 Months Protection
$59.98
Price: $59.98
(as of Oct 10, 2025 00:16:54 UTC – Details)
Give your dog long-lasting protection against fleas and ticks with a Seresto Large Dog flea and tick collar. Unlike other flea and tick protection, Seresto Large Dog flea and tick collars kill and repel fleas and ticks for eight continuous months. Seresto Large Dog flea and tick collars are recommended by veterinarians, stocked by 8,000 vet clinics* and have been trusted* by pet owners for nearly a decade. Seresto Large Dog collars make your dog’s comfort a priority by killing fleas and ticks on contact, so pests don’t have to bite your dog to die. Existing fleas die within 24 hours after initial application of the collar. After 24 hours, any new fleas on the dog are killed within 2 hours with protection against further flea infestation lasting 8 months. The prevention of infestations with new ticks starts at 48 hours after application of the collar. 48 hours after application, any new ticks are repelled and/or killed in as quickly as 6 hours. Seresto Large Dog collars protect against common pests like deer ticks, American dog ticks, brown dog ticks, and Lone Star ticks; they’re also effective against chewing lice. Fleas and ticks not only cause discomfort; fleas can transmit bartonellosis or tapeworm. Ticks can transmit Borrelia burgdorferi which causes Lyme Disease. Check the product label for information on potential side effects.
Seresto Large Dog flea and tick collars are for dogs at least 7 weeks old, and there’s no prescription needed. They’re odorless, non-greasy and water resistant to swimming, exposure to rain or sunlight, bathing, and shampoo treatment.**
Seresto is a trademark of Elanco or its affiliates.
*Elanco Animal Health, data on file
**Seresto Large Dog is water resistant and remains effective following a shampoo treatment, swimming or after exposure to rain or sunlight. Under normal conditions, effectiveness lasts for 8 months. In order to maintain an eight-month duration, dogs must not be bathed more than once per month. For dogs that swim once a month or more, the control duration is reduced to 5 months for flea control and reduced to 7 months for tick control.
Seresto is rigorously regulated worldwide with your pet in mind. Fake Seresto collars are ineffective and can put your furry friend at risk for expensive flea and tick infestations and painful flea and tick bites which can result in transmission of certain diseases. One of the best ways to make sure your Seresto collar is authentic is by making sure it’s “Sold By” one of our authorized sellers. Check out the trusted list before shopping: Amazon.com, Petco, Entirelypets, Petstoreusa, Pets Go Here – Pet Store, Heartland Veterinary Supply.
Is Discontinued By Manufacturer : No
Product Dimensions : 1.56 x 4.5 x 4.5 inches; 3.84 ounces
Manufacturer recommended age : 1 month and up
Item model number : 86030594
Department : Unisex-Adult
Date First Available : January 28, 2013
Manufacturer : Elanco US Inc
ASIN : B00B8CG602
Best Sellers Rank: #50 in Pet Supplies (See Top 100 in Pet Supplies) #1 in Dog Flea Collars
Customer Reviews: 4.4 4.4 out of 5 stars 109,830 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Vet-recommended, premium flea & tick protection for dogs & puppies without the price tag
Long-lasting flea and tick collar kills & repels fleas for 8 continuous months
Seresto is the #1 veterinarian recommended flea & tick collar*
Starts working within 24 hours to kill & repel fleas by contact so pests don’t have to bite your dog to die
Hassle-free, non-greasy, easy-to-use flea & tick protection
Customers say
Customers find the flea collar effective for 8 months of protection and consider it the best product for ticks and fleas. The collar receives positive feedback for its length and effectiveness, though some report it doesn’t work at all. While some customers report no adverse reactions and skin irritation, others mention their dogs became sick or had allergic reactions. The value for money receives mixed reviews, with some saying it’s worth the price while others find it expensive.
6 reviews for Seresto Large Dog Vet-Recommended Flea & Tick Treatment & Prevention Collar for Dogs Over 18 lbs. | 8 Months Protection
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smitty j –
Great product, highly recommend!
I have a great dane and a doberman, I purchase these every year and have never had an issue with fleas or ticks so the price is absolutely worth it. It really does seem to last 8 months and we live in a fairly heavy wooded area and have tons of insects most of the year. It doesn’t leave residue on the dogs, it’s not messy, and doesn’t smell. No issues if they happen to get wet from rain but my sissy dogs don’t care to be out in the rain for too long, lol. I don’t use any other medicines or collars for flea/tick prevention because these work just fine for us. These collars have never irritated their skin and have never fallen off, very durable and long lasting. Great product!
Kate –
Pricey but Bulletproof
This was the first year that I had to deal with fleas on the dogs and I was struggling even after using the vet prescribed flea drops to get them off and keep them off. After reading a lot of reviews and doing a lot of comparisons, I grabbed this collar and let me tell you, this thing has been a godsend. We have not had to deal with fleas ever since putting these on the boys. I will absolutely buy this collar year over year for as long as they live because this thing works miracles! Is it pricey? Absolutely but it works and it will take you through the spring, summer, and fall months when fleas are active. After seeing firsthand how effective it is, I know I’ll buy it every year to ensure my peace of mind.
Amazon Customer –
LONG THOROUGH REVIEW from a skeptical pessimist
This collar is PERFECT. Okay so I was really really super skeptical about buying this for several reasons:- I hate the thought of my two pups having to constantly wear an extra collar- I’ve tried the flea/tick collars from Walmart and they were greasy and had a weird smell but even worse, they did NOT work.- I’ve read some of the horrifying reviews- I’m just a skeptical person and simply didn’t think this would work.BUT IM A BELIEVER NOW.For context, I have a 3yr old short haired ~45lbs pup (pitbull, lab, corgi mix) and and a 7yr old long haired ~30-35lbs pup (Lhasa Apso terrier mix). I live in Maryland where the weather is just always unpredictable. I feel like we have like 6 seasons instead of 4. We have woods in the back of our house which deer always like to frequent, along with a swamp/pond across the street. This spring and the start of this summer we had a monsoon season where afterwards, there was an annoying infestation of ticks (mostly Lone Star and Deer ticks). It was disgusting. I legitimately could not take my dogs out for a walk without finding at least 4 ticks on them afterwards and on me!!! And this is on top of treating my dogs with the monthly tick/flea topical oil treatment. That’s how bad it was, which is what prompted me to buy the Seresto collars. (I bought Large for both of them)Once I did and placed them on my dogs, after maybe like 1-2 days, I have not found a single tick on them. I know that sounds so far fetched but I don’t know what else to say because it’s absolutely true. It does take about 1-2 days for the medication to get into the system (from experience and from *I think* what the package said) because I still did find a few ticks on them the next day. But after that, not a single tick! They’ve been wearing the collars for about 1.5 months now so I’m still keeping an eye on them (I plan on updating this review after 7-8 months to see if the claim of lasting 8 months is legitimate). Right now though, I am sooo happy.Now I want to address some of the other reviews I saw. After I saw some of the pictures of rashes this collar left on some dogs, I was worried, especially cause my smaller one already has exist in skin issues. But both are doing perfectly well with no skin issues from the collar. I don’t want to be presumptuous and I may be totally wrong, but I’m thinking maybe the rashes the other dogs had were because they’re not used to wearing collars? So they just kept itching at it? Maybe? I say that because for me at least, my dogs are used to wearing their regular collars nearly 24/7 since they were babies. So when I added the Seresto collars, they were unphased. But then again I’m also aware that just like humans, each dog reacts differently. Luckily, My dogs have no rash problems from the collars.As for some claiming that the collar doesn’t work.. I’m not sure what to say other than that they really truly work for my dogs, and I live in a heavily tick infested area. It really is like night and day in terms of how well this collar works at preventing tick bites. Especially with my long haired dog since ticks would easily hide in her fur.The collar isn’t greasy nor does it have a strong emanating odor. BUT it’s still medicated so it still has a very slight residue to it but nothing that interferes with everyday life.I’m sold and plan on continuing with this product from here on out. NO MORE GREASY NASTY SMELLY TOPICAL MONTHLY TICK GREASE!**Side note**Make sure you read the packaging instructions carefully!! They mention a few things like about how the efficacy is shortened to something like 5 months for dogs who swim a lot, or how the collar is designed to unlatch if the dog pulls incase it gets stuck on something (which I thoroughly appreciate) so you CANNOT substitute this as a walking collar! The collar DOES unlatch if you hold onto it and your dog pulls (personal experience: guests came over, one jumps and I accidentally grabbed the Seresto collar and it unlatched). But you CAN reattach it!! So definitely take the time to read the package instructions.Hope this helps! I really loveeeee this collar. THANK YOU SERESTO!!!
Selena –
Perfect and worth the money
I highly recommend this collar. Well worth the money! It is durable and it works great. Have been using this for two years and it protects my adorable fur baby from fleas and ticks. He is picky and won’t do chews or pills, so this is perfect! I don’t have to put monthly treatments on him and when my eight months is near I just put another collar on him. I did the math and this is well worth it and cheaper than the chews!
Kayla –
It works, but not as well as an oral treatment.
It works fairly well, I have two dogs one is a beagle mix the other has a longer coat and this works best for the beagle. We are treating on multiple fronts but do still see the occasional flea.
Jarrett lumbert –
Best thing to get rid of fleas
Iâll start off saying I have three dogs and i had a terrible terrible, terrible flea infestation. Constantly bathing and combing my three dogs. And every time I did that it would get rid of at least 50 fleas on each of them like every single day for the past, few months went through all the sprays the soaps and most of the collars until this one. They are extremely pricey for just a collar. But they work, absolute wonders for fleas. I have not found a flea and probably the past two weeks. It takes about two days for the collar to start working. And they work for about eight months, which is amazing. Just make sure you keep an eye on your dogs for the first couple of days and make sure youâre able to fit two fingers between the dog and the collar.