When I first got Missy, there was wayyyy too much snow outside for a little 7 week old, 1 lb yorkie to potty train outdoors. So I just continued using pee pads, like the breeder did. She ended up breaking her leg, and once that was healed she had to be spayed, so she spent a looooong time confined to her ex-pen as a puppy. Once she finally had "free reign", she was consistantly using her pee pad, so I just stuck with it. I have to admit, I love the convenience of the pads. I use washable ones (actually Shamwow's) to be more environmentally friendly.