With its sustained-release technology, Seresto delivers the performance you expect from a topical treatment in an easy-to-use collar for 8 months of uninterrupted protection against fleas and ticks!
Convenient, easy-to-use collar kills fleas, and kills and REPELS ticks on dogs for up to 8 months! Also kills chewing lice for 30 days only. If a tick is repelled or killed, it cannot attach to a dog and transmit organisms that may cause disease. Kills ticks within 48 hours of initial application. Reinfesting ticks are repelled and/or killed in as quickly as 6 hours. Quickly kills fleas on dogs within 24 hours and continues to prevent reinfestations for 8 months. Reinfesting fleas are killed within 2 hours with protection against further flea infestation lasting 8 months. Aids in the control of flea larvae in your dog’s immediate surroundings following contact with a pet treated with Seresto.
Simply outfit your dog with a Seresto Flea & Tick Collar for slow, steady release of 2 active ingredients - Flumethrin and Imidacloprid - proven to kill fleas and ticks. There's no need to remember monthly topical applications! Plus, you'll enjoy peace of mind knowing your dog is protected from these dangerous parasites' associated diseases for 8 months.
Small Dogs & Puppies, for dogs 7 weeks of age & older and up to 18 lbs; Large Dogs & Puppies, for dogs 7 weeks of age & older and over 18 lbs.
Seresto Flea & Tick Collars are odorless, water-resistant, and safe to use with your dog's existing collar. Each Seresto Flea & Tick Collar includes 3 clip-on reflectors to enhance your dog's visibility.
Active ingredients: acaricide (tick killing) Flumethrin and insecticide Imidacloprid.
Available in 2 sizes/lengths to fit and protect virtually any size or breed of dog. For dogs only.
Dogs & Puppies
|| over 7 weeks old
||up to 18 lbs
Dogs & Puppies
||over 7 weeks old
||over 18 lbs
Shop all Flea & Tick Control Products for Dogs
Please click on "More Information" for active ingredients, instructions, and additional product details.
Sorry, this item cannot be shipped to Puerto Rico. We apologize for any inconvenience.
||% by Weight
* Trans Z-1/trans Z-2 ratio: max 66% trans Z-1 and min 34% trans Z-2
Dosage and Administration
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. Check collar fit regularly and adjust if necessary - especially when puppies are rapidly growing.
Do not use collar on puppies less than 7 weeks of age.
You may initially notice a white powder residue on the surface of the collar. This is stearic acid, a substance graded for food use, which helps release the collar during the molding process.
Your pet should wear the collar continuously for the 8-month protection period. Remove and replace collar after the 8-month treatment period.
Innovative technology in flea and tick protection
Seresto's unique polymer matrix enables it to release controlled doses of its active ingredients, both of which are well tolerated in cats and dogs.
||Proven to repel and kill adult ticks, larvae, and nymphs
||Proven to repel and kill adult fleas, larval flea stages, and lice
The Seresto Collar does not release its active ingredients until it is applied to your pet. Once on your pet, the active ingredient molecules migrate from the polymer matrix within the collar to form a microlayer on the collar surface. The active ingredients are then transferred from the collar to the lipid layer of your pet's skin and hair. Your pet's natural oils help the active ingredients diffuse and spread through the lipid layer, offering your pet full-body protection.
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 immersing your pet in water. Seresto 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 per month. For dogs that swim once a month or more, the control duration is reduced to five months for fleas and to seven months for ticks.
Active ingredients continue to migrate from matrix to lipid layer as needed. Optimal flea- and tick-killing protection is sustained for 8 months at a consistent and effective dose.
Seresto is a result of a multidisciplinary effort based on Bayer's unique experience in insecticides research, polymer chemistry, and veterinary parasiticides development.
Wash your hands after handling collar. KEEP COLLAR OUT OF REACH OF CHILDREN.