I recently completed my basement, but I am having a problem getting the drywall dust off of the concrete floor. At this particular time, we were going to let the concrete flooring remain until we have enough extra finances to tackle the floor. However, we can't seem to get the dust off the floor. We have tried wet-vac, mopping, blowing, scrubbing. Does anyone have any suggestions as to how we might go about getting the haze of drywall dust off the floor???