We have an outdoor dog that is absolutely covered in fleas nearly year round, since we don't get hard freezes here in North Carolina. We've tried Frontline, Capstar, Program, Advantage, flea collars, flea shampoos, spraying fipronil in the area around the barn where he lives, diatomaceous earth, brewers yeast and garlic, cedar oil and cedar chip bedding, and nothing worked. We even used corn oil to coat and suffocate the fleas, which worked but only for a day or two. I was convinced that these are zombie fleas and immortal. And the poor dog was miserable and scratching.
I hesitated to pay $50 for a flea collar that might not work, but took the chance and ordered this Seresto collar. We put it on the dog two days ago, and I'm amazed! The first day, we noticed that the fleas on the front half of his body were gone. Today we didn't find one single live flea on him, nostrils to tail tip. We did notice some dead ones on him. This is the first thing we've ever found that got rid of/killed the fleas! He was lying happily in the sun this morning, not scratching or twitching, for the first time in months.
Since the collar worked, I've also ordered one for our little indoor dog and the indoor cat, who also have fleas (but not as many). If these collars really kill the fleas for 6-8 months, they are worth every penny of the cost. I will update my review after a few months, to report whether or not the flea killing effect lasted. I'll also keep an eye out for irritation, baldness or oozing sores where the collar lies (since some pets have had an adverse reaction to collar) and report that here if it happens.
For now, I'm very, very happy to have something to help combat the fleas!
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Edited 6 June 2017: It's only been a few weeks but I wanted to update. No fleas on the pets - if they pick one up in the grass it hops off without biting. The small dog was a little lethargic for a day or so (just acted tired and didn't want to play - he was still eating) after we put on his collar, but we kept a close eye on him and he was back to himself on the third day. No rawness, sores or extreme symptoms from any of the pets. I also set off some Hot Shot flea fogger/bombs in our carpeted bedrooms, where we had fleas (the pets sleep with us). Between the collars and the bombs, we are finally, at long last, flea free! I'll update again at the end of the collars' lives to report how long they lasted. Buy this collar - you won't regret it!
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Amazon's Choice
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From the manufacturer
Non-Greasy, Odorless Flea and Tick Collar
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Find the right collar for your dogUse your dog’s weight to determine which size is right for them.
The Seresto large dog collar was designed with no upper weight limit. |
Water-resistantSeresto 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 8-month duration, dogs must not be bathed more than once a month. For dogs that swim once a month or more, the control duration is reduced to five months for flea control and reduced to seven months for tick control. |
How does it work?Active ingredients are stored in the collar’s innovative polymer matrix and released in low concentrations across your dog’s coat and skin for 8 months. Fleas and ticks are killed through contact, and don’t have to bite your dog to die. |
Frequently Asked Questions
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How long does it take to work on fleas?Seresto kills existing fleas on dogs within 24 hours after application. After those 24 hours, new fleas are killed within 2 hours. |
How do I know if the Seresto collar I purchased is authentic?It is crucial that pet owners purchase real and genuine Seresto products from authorized and trusted retailers. Counterfeit collars and their packaging look very similar to the actual product. Be sure the collar does not have a greasy feel or an odor. |
Does it expire?There is no expiration date required on the packaging. The product should be kept in its original packaging and stored as directed on the label. |
What are the key ingredients?The active ingredients in Seresto collars are Imidacloprid and Flumethrin: Imidacloprid to help protect against fleas and Flumethrin to help protect against ticks. No other product has this combination of ingredients. |
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| Seresto Large Dog | K9 Advantix II Large Dog | Advantage II Large Dog | advantus Large Dog | Advantage Treatment Shampoo | |
| Form | Collar | Topical Drops | Topical Drops | Soft Chew | Shampoo |
| What it Does | Flea and Tick Treatment and Prevention | Flea and Tick Treatment and Prevention | Flea Treatment and Prevention | Flea Treatment | Kills Fleas and Ticks on Contact |
| Application Frequency | Every 8 Months | Monthly | Monthly | Do Not Exceed One Soft Chew in a 24-Hour Period, As Necessary | Every 7 Days as Needed |
| Kills Fleas | ✓ | ✓ | ✓ | ✓ | ✓ |
| Kills Ticks | ✓ | ✓ | ✓ | ||
| Kills Mosquitoes | ✓ | ||||
| Kills Lice | ✓ | ✓ | ✓ |
Compare with similar items
 | Hartz UltraGuard Plus Reflective Orange Flea & Tick Collar for Dogs and Puppies | Seresto 2-Pack Flea and Tick Collar for Cats, 8-Month Cat Flea Collars | Flea and Tick Collar for Dogs,Flea and Tick Treatment and Prevention for Dogs up to 8 Month,One Size Fits All,100% Natural Ingredients, Waterproof,Include Tick Removal Tools,2 Pack | Seresto Flea and Tick Collar for Dogs, 8-Month Flea and Tick Collar for Small Dogs, Up to 18 Pounds | |
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| Customer Rating | (83430) | (5845) | (31370) | (158) | (37360) |
| Price | See price in cart | $7.97 | See price in cart | $22.99 | $110.00 |
| Shipping | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping. Details |
| Sold By | Amazon.com | Amazon.com | Amazon.com | Plumbers LLC | Amazon.com |
| Color | Grey | Orange | Orange | Grey | Yellow |
| Size | 1-Pack | Dogs and Puppies up to 22" Neck | 1-Pack | Large | 2-Pack |
Customer reviews
A word of warning, your experience may be different
Reviewed in the United States on January 18, 2017
I think this collar is an acceptable option for those who are skeptical on how well monthly topical solutions perform. Especially on the third or fourth week of use with those competitors. In my experience now with three different dogs wearing these collars, I have only found ticks a few times, and this is normally around the seventh or eighth month of use. This is my indication that it is time to change the Seresto Collar.After two years of using Seresto I will not be purchasing these again. Two of my dogs have developed a terrible reaction to the chemicals that resulted in a nasty rash that needed treatment with antibiotics to prevent infection. They developed these rashes over time perhaps due to the gradual exposure to the chemicals. Chemicals the collars are designed to release to prevent fleas and ticks. I assumed my first dogs reaction was just a unique experience, but the most recent happened just this past week of 01/09/17. I will not let it happen a third time. It is effective at what it does, but as might be the case for some users and their pets, it might be too effective.
Reviewed in the United States on January 18, 2017
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Top reviews from the United States
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Reviewed in the United States on January 18, 2017
After two years of using Seresto I will not be purchasing these again. Two of my dogs have developed a terrible reaction to the chemicals that resulted in a nasty rash that needed treatment with antibiotics to prevent infection. They developed these rashes over time perhaps due to the gradual exposure to the chemicals. Chemicals the collars are designed to release to prevent fleas and ticks. I assumed my first dogs reaction was just a unique experience, but the most recent happened just this past week of 01/09/17. I will not let it happen a third time. It is effective at what it does, but as might be the case for some users and their pets, it might be too effective.
Size: 1-PackStyle: Large Dog OnlyVerified Purchase
A word of warning, your experience may be different
Reviewed in the United States on January 18, 2017
I think this collar is an acceptable option for those who are skeptical on how well monthly topical solutions perform. Especially on the third or fourth week of use with those competitors. In my experience now with three different dogs wearing these collars, I have only found ticks a few times, and this is normally around the seventh or eighth month of use. This is my indication that it is time to change the Seresto Collar.Reviewed in the United States on January 18, 2017
After two years of using Seresto I will not be purchasing these again. Two of my dogs have developed a terrible reaction to the chemicals that resulted in a nasty rash that needed treatment with antibiotics to prevent infection. They developed these rashes over time perhaps due to the gradual exposure to the chemicals. Chemicals the collars are designed to release to prevent fleas and ticks. I assumed my first dogs reaction was just a unique experience, but the most recent happened just this past week of 01/09/17. I will not let it happen a third time. It is effective at what it does, but as might be the case for some users and their pets, it might be too effective.
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Paolo
Non attendibile
Reviewed in Italy on April 8, 2022Size: 1-PackStyle: Large Dog OnlyVerified Purchase
Paolo
Reviewed in Italy on April 8, 2022
Non so la differenza ma sicuramente l'avrei pagato molto meno da altro venditore.
Chiesto il rimborso, non ho ricevuto nessuna risposta....
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Ugo
Prodotto "sicuro" ma costoso
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ottimo
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