Flea and tick collar for dogs: the basics

A flea and tick collar for dogs is the simplest form of flea and tick prevention: one collar, put on once, working for months.

How a flea and tick collar works

The collar holds active ingredients that spread from the neck across the skin and coat. Seresto uses two of them, imidacloprid and flumethrin, released slowly over 8 months; fleas and ticks are killed and repelled by contact.

What to compare

• Duration: Seresto lasts 8 continuous months.
• Start: within 24 hours.
• Mess: none — the collar is non-greasy and odorless.
• Size: by your dog's weight, over or under 18 lbs.

Putting it on

Unroll the collar, put it around the neck, push the end through the buckle, fit it as the label describes and trim the extra length.

No prescription

Seresto is sold without a prescription, so you can buy it with the rest of your pet supplies.