Seresto flea and tick collar for dogs
A flea and tick collar for dogs has to be the right size and keep working all season. Seresto makes two dog collars — over 18 lbs and under 18 lbs — and each kills and repels fleas and ticks by contact for 8 continuous months.
One collar per dog, chosen by weight: over or under 18 lbs.
How do dog flea collars work?
A flea and tick collar for dogs releases its active ingredients slowly from the collar into the coat. Seresto uses imidacloprid and flumethrin, stored in the collar and released over 8 months, so fleas and ticks are killed and repelled by contact all over the dog, not only around the neck.
Choosing the size
Weigh your dog. Over 18 lbs: the large dog collar. Under 18 lbs: the small dog collar. Both are for dogs and puppies 7 weeks or older. A puppy that will outgrow 18 lbs during the season should start on the large collar.
One collar or two?
The 2-collar packs cover two dogs of the same size, or the same dog for a second season of 8 months.
Fit
Fit the collar as the label describes and trim the extra length so your dog cannot chew it.
Kills fleas and ticks before biting
Pests that land on a dog wearing the collar meet the active ingredients on the skin and coat. That is why Seresto kills fleas and ticks without biting: biting is not needed for the collar to work, which matters for dogs whose skin reacts to every flea bite.
Baths, rain and swims
According to Elanco, Seresto is water-resistant and remains effective after a shampoo, a swim or a walk in the rain. Elanco also notes that a dog should not be bathed more than once a month, and that for dogs that swim once a month or more, flea control is reduced to 5 months and tick control to 7 months. The label in the box has the full directions.
Wearing it every day
The collar is odorless, has no scent of essential oils or peppermint and leaves nothing greasy on the coat, so it can stay on the neck day and night while your pet sleeps on the sofa or plays with the kids.
Collar, spot-on or spray?
Topical spot-on treatments are applied every month, and sprays and powders need to be repeated often. A flea and tick collar for dogs is put on once for the season. For many owners the collar is the easiest form of flea and tick prevention to keep up.
Dogs and cats in the same home
Dog collars are for dogs only. If a cat lives with your dog, give the cat its own Seresto cat collar, so both pets are protected against fleas, ticks and other parasites for the same 8 months.
Questions about dog collars
Do flea and tick collars for dogs actually work?
Seresto is designed to kill and repel fleas and ticks by contact for 8 continuous months, starting within 24 hours.
What flea collar do vets recommend?
Elanco describes Seresto as the #1 veterinarian-recommended flea and tick collar (data on file).