I am working on the bells but it is very difficult with my three dogs. I'm afraid if they all start learning to ring the bells that I will never get to sit down as I will be a slave to the bells. Instead, since I do take them out generally all together I am trying to get the puppy to be the only one to ring the bells and then I let everyone out. I started with the treat on the bell, and then realized as well that dogs, being too smart will start to figure out..if I ring these bells I will get a treat..so I am trying to do the physical praise versus and actual treat. We are chunking along on this but I think it will be worth it. I agree with most Yorkie owners that know these dogs seem to have a hard time telling you when they want/need to go outside, but they definitely know how to verbalize wanting to come back in!!!
They are soo smart.
Kathy