My Bonzo lets me with no problem, although the back ones are still a little tricky. I use a really small baby tooth brush and hold it while he chews on it.... Mocha Bean, however is a lesson learned...Make sure to clip the "claws of death" before trying to brush her clenching teeth We are still working on her. I got some dental crunchies for the vet, she does not like them... Oh, well, try again.