i bought my yorkie a toy from the store that is called i think fleecy cleans, basically its like a fleece toy that is in a rope form that that when they chew on it it helps clean the teeth and helps prevent plaque build up. Its a brightly colored rope toy that is made out of fleece that she chews on and actually likes it. i originally bought it, because i wanted her to have something soft to chew on other than socks and when i got it home i read the label and it said it is for the teeth.
here is the link to the toy from petsmart
http://www.petsmart.com/global/produ...4961568&Ne=174