Seresto Flea & Tick Collar For Dogs Over 18 lbs., Vet-Recommended, 8 Month Protection

This is the best flea protection we've ever used. I tried a different brand last summer and it was awful. My Great Dane lost so much hair. So we switched back to these and will never use anything else. Within two days both our big dogs were obviously feeling much better, much more comfortable, no more itch. Within two weeks most of her hair was growing back.

This flea collar did the job. Was using Frontline and was still getting a few fleas . Frontline doesn't kill the ticks until they attach themselves to the dog and then they die. This flea collar seems to kill them before they attach themselves to my golden retriever. A little pricey, but it's been working for 4 months and my dog swims every day.