Thanks everyone for the advice. I was thinking about trying the bell but wasn't sure if that was the way to go or not. I think I will give it a try now. Ideally I would like to train him to go outside when we are home but use the pee pads when we are away. A friend told me she did that with her teacup chihuahua and it works great. Thanks for the ideas and we'll keep working on it, I know he'll get it eventually, he's a clever little guy! By the way, does anyone know if yorkies like to swim?