Sonic will be 7 month's in 2 days and he isn'f fully house trained yet, trust me I take him outside to do his *business*all during the day, when I think he is getting closer to being fully house trained I find Pee for a small dog he sure can Pee. with that said I decided to try the belly band to help train him and its working out great so far.. My 9 year old chihuahua was easy to house train. Sonic is so smart but stubborn with the house training lol. good luck to you on your yorkie |