Gotta agree with Javelin. I learned REALLY quickly in the Navy that if a guy just mopped/waxed the floor, you'd dam sure better find out FROM HIM if its okay to walk across it. Because if you didn't, you could also be dam sure that the next time you were working on a floor somewhere, him and about a dozen of his buddies would find your floor. To this day, if the cleaning guy at work is mopping, I'll either walk around, or if he tells me to go ahead, I'll walk along a single row of tiles. Only to look back and watch some other schmuck cut across the floor or wander around the room on his cell phone. Idiots.