When Mousse and Ginger were alive I had to have Mousse done 2 or 3 times and he was 13 when he passed away, Ginger I only had to have done once, the vet said for Cockers they had really good teeth, but they liked to chew alot and I kept them up on there chews and stuff so I think that helped. Reilly is only yr old so hopefully his will not be needed done for a while, he is still a huge chewer so there still pretty and white.