I may try this on my balcony of my condo. I live on the third floor, and it would be a lot easier in the winter and mornings if I can just open my balcony door and have the dog go there. All you need is sod, and proper drainage.
Which is basically the same thing. They had a demonstration at the expo and I've seen it before. It's basically the same thing that Sadie goes on now but ours cost like 20 bucks to set up. :wink: Good idea though!