About this item
- Provides 8-months of continuous flea and tick prevention
- Seresto flea and tick collar for large dogs works through contact, so fleas and ticks do not have to bite your dog to die
- Veterinarian-recommended flea and tick prevention for dogs in a convenient, odorless and non-greasy collar; No need for messy monthly treatments
- Starts to repel and kill fleas within 24 hours of initial application
- Flea and tick collar for large dogs also helps treat and control sarcoptic mange and kills lice
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 reduces to seven months for tick control. |
How does it work?Active ingredients are stored in the collar’s unique 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 by the EPA for Seresto for dogs. 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. |
