I bought a dogwiz for my Yorkie, it's great! What it is, is a very shallow dish with a grate. You put a wee wee pad or newspaper on the platform and then place the grate over it. Then they can't reach the paper and another nice thing is that they aren't walking all over in their pee ether. I wasn't sure if Zoe would use it but, I didn't have any problems, she took to it right away! What I did was put the dogwiz on one side of her baby playpen and her food, water, toys, and blankets on the other. I gave her loads of prase when she would do a "good potty" and then I would let her out to play. It made it nice because it wouldn't let the wee wee pad fold or shift in her playpen. Eventually, I moved the playpen out of the way and placed the dogwiz in it's spot (next to my back door) and she continued to use it. I put it next to the door during the winter because most of the time it was too cold for her to go outside but, close to where she needed to go when it was warm enough. I have a link to the dogwiz web page below!
http://twinkle.home.bresnan.net/id31.htm