Mine have dental chews with little nubs on them they love to chew on as well as Nylabones. I also brush their teeth but should keep up with it more often. Tommy's teeth are perfect but Tasha's back teeth are starting to get a bit of tartar buildup. I used a scraper to get some of it off the other day but I may take her in to have them done at the vet's, it's really hard to scrape at those very back teeth.