"Because it's wood, it's not made to last, so don't buy it and expect it to last any length of time. Your rodent will chew away at it, but that's a good thing. At least it's pretty cheap.
My hamster likes playing in it, though she won't sleep in it. Cleaning it is as easy as shaking it out (assuming you don't have a sick pet). It makes for a great toy for your hamster/mouse/gerbil."