This was our first time using Seresto with our two goldendoodles. Weve used other products such as frontline and K9 Advantix but didn't like the topical treatment and the way it leaves their coat greasy. So far we really like the collar. Although we did find a tick near my dogs eye about two weeks after we started them with the collar! We will continue to use the collar. It was recommended by our vet as well!