I brush Timber's teeth (admittedly, not daily - maybe 3 times a week) and he sometimes gets a chicken wing. Every night he gets a chew, either a fish skin or braided lamb or ostrich. I've also been using some old Canident - I haven't used it for ages but at his last vet exam at the end of December the vet mentioned a little bit of tartar. So, I plan to keep at it with the three approaches, brushing, chews, and the supplement. My Canident is almost finished. Our local pet shop stocks TartarX. Any views / experience on whether either is better?