I (and Willy, of course) highly recommend the Dirt Dawg. http://petoftheday.com/talk/showthread.php?t=131774

I turn it on as I go out the door and runs around to its hearts content (or until its battery runs down ) and no more dust bunnies i/e rolling tumbleweeds (those suckers are huge!)

It runs under the beds and furniture. I do try to make sure that all light-weight area rugs are up and out of the way. It will try to suck them up. Also stuff like long power cords might get wound around the brushes. This thing really works!