I bought this in preparation for adopting my first dog, figuring there would be times where he'd need to potty but it wasn't a good time to take a walk (weather, middle of the night, etc.), since we are apartment dwellers. Once he got used to using it, it has been flawless. He uses it every morning while I'm still drinking my coffee so I don't need to run out in my pajamas to walk him first thing, and then we take our walk later. It lives on the balcony and is pretty easy to clean (I recommend u...