Single Bucket Wringer Trolley 20Ltr A mop bucket cart (or mop trolley) is a wheeled bucket that allows its user to wring out a wet mop without getting the hands dirty mop and bucket are traditional cleaning equipment that is used to clean hard floors. You can clean your floors on your hands and knees with a bucket and soapy water, with a broom to sweep, with a mop to wash or with a carpet sweeper. You can even clean your carpets using spray foam cleaners, mops and air drying