
About Seresto for Dogs
Stop Fleas & Ticks
Seresto provides premium flea and tick protection without the hassle of a prescription. It starts killing and repelling fleas within 24 hours and continues working for 8 months to prevent new infestations.
Seresto Flea and Tick Protection
Seresto provides fast-acting, long-lasting flea and tick protection in a clinical strength collar.
How to use
Use only one collar per animal. Fit collar around your pet's neck, allowing for 2 fingers to fit between the collar and your pet's neck to ensure a comfortable, yet snug, fit. Once collar is properly fitted, cut off any excess collar measuring 1" or longer. The collar should be worn continuously for the 8 month protection period. Check periodically and adjust fit if necessary, especially when puppies are rapidly growing. Keep the collar in the bag and in the outer packaging until use. Replace the collar after 8 months for optimal tick and flea protection.
Size
Large
Neck:27.5 inches
Recommended Weight:over 18 lbs
Recommended Age:over 7 weeks
Ingredients
Active Ingredients: Flumethrin 4.5%, Imidacloprid 10.0%.
💡 Important Information
Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.
Water Resistance: It is unnecessary to remove the collar before immersing your pet in water. Seresto remains effective following a shampoo treatment, swimming or exposure to rain or sunlight. In order to maintain an 8 month duration, pets must not be bathed more than once a month. For pets that swim once a month or more, the control duration is reduced to five months for fleas and seven months for ticks.
How Seresto Works
Seresto’s active ingredients are stored in the collar's polymer matrix and slowly released over 8 months. No messy monthly treatments or hard-to-swallow pills—just effective flea and tick protection! The Seresto dog collar is suitable for use on dogs and puppies 7 weeks or older. Read and follow all label directions and talk to your vet if you need further guidance.
About Seresto
Seresto is easy to use, odorless, and non-greasy for mess-free convenience. Available for both dogs and cats, Seresto provides up to 8 months of flea and tick protection, with no Rx required.
See how Seresto® dog collars are different from the rest.
|   | chewy | others |
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KILLS FLEAS & TICKS |
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REPELS FLEAS & TICKS |
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8 MONTHS OF PROTECTION IN 1 APPLICATION |
Top questions about Seresto® flea and tick collar for dogs
Where is this product sourced from?
Where is this product sourced from?
We source all our products from manufacturer approved distributors or directly from the manufacturers. Chewy takes pride in ensuring that our furry friends’ wellbeing is always our top priority. We have worked hard to partner with all of the manufactures to deliver 100% authentic products
I have never had a flea problem before. Where are my pets picking up fleas?
I have never had a flea problem before. Where are my pets picking up fleas?
Fleas are very hardy pests that are quite capable of hitching rides on a variety of mammals. Wild animals or feral pets traveling through the environment may be a source for a pet’s exposure.Fleas may be brought to the house by: * You – attached to clothing, luggage, dog blankets, etc. * Your pet – any time your pet steps outside your house, they are potentially exposed to fleas, especially in areas where there are other animals. * Stray or homeless cats and dogs – since these animals are not being cared for, they are easy targets for fleas. A single feral cat walking through your backyard even just one time may drop many flea eggs into the grass or under shrubs. * Wildlife – particularly raccoons and opossums. These animals typically aren’t seen very often, because they are active at night. A single opossum can carry as many as 1,000 adult fleas! An opossum walking through your backyard even just one time can drop many flea eggs into the grass or under shrubs as they pass through. * Non-treated pets in the household – most dogs are treated for fleas and ticks. Often, the cats in the household are not, especially if they are indoor only cats. * Non-treated pets in the neighborhood – you may be vigilant about treating your pets for fleas, but your neighbor(s) may not.
What are the benefits of Seresto?
What are the benefits of Seresto?
Inside the unique polymer matrix of Seresto are two active ingredients:
- Imidacloprid has been used in products for years to control flea infestations.
- Flumethrin effectively repels and kills ticks.Flumethrin works together with imidacloprid to provide dual action against fleas and ticks. No other treatment has this combination of ingredients.The active ingredients spread from the site of direct contact over the skin surface of the cat or dog.*Sustained release technology*Seresto works similarly to a monthly topical, but as the active ingredients wear off over time, a new supply is continuously replenished in low concentrations. The active ingredients spread from the site of direct contact over the skin surface.Bayer's polymer matrix technology is designed to slowly and continuously release the active ingredients for eight months, a duration that makes it clearly different from other flea and tick collars.
Is Seresto water resistant?
Is Seresto water resistant?
Seresto is water resistant. The active ingredients of Seresto are contained within the Bayer Polymer Matrix, making it water-resistant. Therefore it is unnecessary to remove the collar before the pet is immersed in water. Seresto remains effective following a shampoo treatment, swimming, or after exposure to rain or sunlight. Under normal conditions, effectiveness lasts for eight months. In order to maintain an 8-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 five months for fleas and seven months for ticks.
What if my cat or small dog gets stuck while wearing a Seresto collar?
What if my cat or small dog gets stuck while wearing a Seresto collar?
Because some pet owners may be concerned that a cat or small dog could get stuck while wearing a collar, Seresto is designed with a safety release mechanism. In the unlikely event of the cat being trapped, the cat's own strength is sufficient to widen the collar to allow for quick release.A hard pull causes the ratchet-release mechanism to allow a widening of the collar.The small dog and cat collars are equipped with a predetermined breaking point. A harder pull triggers the breaking of the collar at this point.
What is the expiration date for Seresto for dogs?
What is the expiration date for Seresto for dogs?
There is no expiration date required on the packaging by the EPA for this product. The product should be kept in its original packaging and stored as directed on the label.
When can I bathe my dog after application of Seresto for dogs?
When can I bathe my dog after application of Seresto for dogs?
We recommend bathing BEFORE applying product. Seresto 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. There is no need to remove the collar for bathing. Please use a non-stripping, pet shampoo.
How often can I allow my dog to swim when using Seresto for dogs?
How often can I allow my dog to swim when using Seresto for dogs?
Seresto 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. 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. There is no need to remove the collar for swimming.
How often can I bathe my dog when using Seresto for dogs?
How often can I bathe my dog when using Seresto for dogs?
We recommend bathing BEFORE applying monthly product. The product can be applied once the pet is towel dried.We suggest using non-stripping shampoos that are specifically designed for use on pets.‘Non-stripping’ shampoos are generally soap free formulations designed for general cleansing. Bayer makes a variety of shampoos that are non-stripping, general cleansing shampoos.* Seresto 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. There is no need to remove the collar for bathing.
How do I store and dispose of Seresto?
How do I store and dispose of Seresto?
Do not contaminate water, food or feed by storage or disposal.Storage: Store in the original unopened container in a cool, dry place that is inaccessible to children.Disposal: Dispose of container, pouch and expired collar in trash.


