Seresto Flea and Tick Collar for Dogs Large-Over 18lbs.


Seresto Flea and Tick Collar for Dogs Large-Over 18lbs.

Bayer - For 8 month prevention and treatment of ticks, fleas and lice on dogs and puppies 7 weeks of age and older.

Easy-to-use, convenient collar.


Kills and repels fleas and ticks, including deer, American dog, brown dog and Lone Star ticks. Kills fleas within 24 hours and prevents tick infestation within 48 hours of initial application. Kills and repels fleas before they lay eggs and aids in control of flea larvae in dog's surroundings following contact with a Seresto-treated dog. Kills fleas that may vector tapeworm infections, bartonellis, and rickettsiosis. Kills chewing lice and aids in treatment and control of sarcoptic mange. The active ingredients spread from the site of direct contact over the skin surface of the dog. As active ingredients wear off over time, a new supply is continuously replenished in low concentrations.


Water-resistant and remains effective following shampoo treatment, swimming, or after exposure to rain or sunlight.

Non-greasy and odorless.

3 optional reflector clips included for additional visibility at night.

Small Dog size features safety-release mechanism, in the unlikely event of a dog being trapped, the dog's own strength is sufficient to widen the collar to allow for quick release.


Two active ingredients – 4.5% flumethrin and 10% imidacloprid – work together to provide dual action against fleas and ticks. 

Small Dog - up to 18 lbs; Large Dog - above 18 lbs.

Consult veterinarian before using on debilitated, aged, breeding, pregnant or nursing dogs.



One collar per animal to be fastened around the neck. Remove collar from protective bag directly before use. Unroll collar and make sure that there are no remnants from the plastic connectors inside the collar.

Insert end of the collar through the buckle. Adjust the collar around the animal’s neck without tightening it too tight or leaving it too loose. As a guide, it should be possible to only insert 2 fingers comfortably between the collar and the neck. Pull excess collar through the loop(s). Collar length of greater than 1 inch (2 cm) beyond the loop(s) should be cut off unless it is on a growing puppy, where some additional length may be needed for adjustment as the animal grows.

After application of the collar, three reflector clips may be fixed permanently to the collar to increase the animal’s visibility in the dark. Take the clips out of the bag. The clips should be evenly distributed on the non-overlapping part of the collar. The clips are correctly applied when a clicking sound is heard. For safety reasons once the reflectors are fixed to the collar the clasp closes permanently and cannot be re-opened.

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.

Replace after 8 months for optimal tick and flea protection.


Specific References

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