@VegasGeorge we have the exact same set-up, in a shower stall, with the bottom tray removed. It is really only used very early in the morning on days when hubby leaves at the crack of dawn and the rest of the house is still in bed. But sometimes the dogs wake up when he leaves and it gives them a place to go. There is also the odd time when they don't do their business outside because the weather is just so bad they race back inside without taking care of business. It really is convenient and sanitary. I am fortunate as my bullies go outside the rest of the time and don't seem to be confused about the rest of the house being off limits. But they are also not crated. They share the master suite and mostly sleep in our bed I guess that means the master suite is their crate.. Spoiled bullies!