
Seresto Collar for Large Dogs is a long-lasting treatment for protection against common external parasites. Trusted by pet parents, it is the #1 vet-recommended flea and tick collar according to the manufacturer. This water-resistant flea treatment effectively kills and repels parasites through contact before they bite. The collar uses a unique polymer matrix technology that slowly releases active ingredients over an extended period, ensuring persistent protection. When used as directed, the Seresto collar for over 18 lbs dog protects against:
Imidacloprid 10%, Flumethrin 4.5%
Dogs 7 weeks of age or older, weighing over 18 lbs.
| Dog Size | Dog Weight | Collar Length | Flumethrin | Imidacloprid |
| Small Dogs | Up to 18 lbs | 15.0 inch (38 cm) | 4.5 % | 10.0 % |
| Large Dogs | Over 18 lbs | 27.5 inch (70 cm) | 4.5 % | 10.0 % |
Flumethrin and Imidacloprid
This collar is for external use on dogs only. Keep it in the protective bag and in the outer packaging. Wash your hands after handling the collar. For your dog’s comfort, ensure the collar fits snugly but not too tightly and check the collar fit regularly. For dogs that swim once per month or more, the protection duration is reduced to five months for flea control and 7 months for tick control.
Consult a veterinarian before using it on aged, debilitated, pregnant, breeding, or nursing dogs. Do not bathe your dog more than once a month to maintain 8-month efficacy. Talk to a vet before using it together with your dog's other treatments to prevent drug interactions.
If you are sensitive to any of the active ingredients, do not come into contact with the collar. Avoid attaching a leash to the collar, as this may cause breakage. The collar contains small parts and can be a choking hazard. Keep it away from children.
The Seresto dog collar is not indicated for use on puppies under 7 weeks of age. Do not use it on other animals or humans.
Store the collar in its original, unopened container. Keep it in a cool, dry place. Do not contaminate water, food or feed by storage or disposal. Avoid using the container for food storage or other purposes.
Rated 4.6/5 based on 183 ratings
Excellent flea collar with lasting protection.
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The Seresto collar has been convenient and has reduced the need for frequent applications.
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The Seresto collar has reduced the need for frequent treatments and has been very effective.
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The Seresto collar has reduced the need for frequent treatments and has been very effective.
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The Seresto collar has been super convenient. I don’t have to think about monthly doses anymore.
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