We leave our three in separate crates in our kitchen. Each one has a small water bowl that hooks onto the side of the crate. And two of them have a pillow/bed in their crate. Sometimes we'll put a kong in there with them.

We let them outside right before we leave and then right when we get home. Theyve had a few accidents the first couple times we left them of 8 hrs straight.. but now they dont have any problems with it.