Go to a local grocery store and ask the manager what night they mop. Then, make a deal!
Alternatively, drop a jar of pickles on the floor, and when the Mop & Bucket Brigade arrives, insist that you clean up the mess. The jar of pickles is less expensive than a mop, and you'll be 'dragging' in no time!
Never hang out with the "Bucket Brigade" when there is loose pickles around .