Molly goes on what is called a Ugo dog ...I bought it online and you place paper in the bottom and then 2 grates fit ontop and when she pee's she doesn't step in it and the poop sits on top and I just flush it..
Heres a link
U Go Dog Indoor Dog Potty
At first we had to put paper on top and then kept making the paper area smaller until it was gone...
Best 50.00 I have ever spent...
Diana and Molly