Got tired of waiting for the Scooba to show up on Woot!, so I ordered one at the start of last week. It arrived Friday and I've had it busy this weekend scrubbing the kitchen and dinette floors.
http://spiceware.org...ery/Misc/P1010500

I was rather surprised at how dirty the water was after the first run (which took about 45 minutes)
http://spiceware.org...ery/Misc/P1010499

I had the Scooba do each floor 4 times and each time the dirty water was clearer. I didn't visibly notice much of a difference on the floor (probably due to the gray pattern), but I definitely noticed a difference when I walk thru the room barefoot.

I've mopped enough not to have had that problem.