Great article, Nichole. Sheena's such a beauty, and what a cute little puppy she was. I don't have a pen built, but my two each selected their own "designated area" in our current kennel. We're going to be moving, and I might try this at the new place, as the yard will be much smaller & it would be nice to keep it clean. Star won't even walk around in areas that are used for "potty", not a problem now but could be with a small yard.