H2prO Flat Mop System delivers powerful cleaning and compact design. Dual-tank system keeps clean and dirty water 100-percent separate while battery-free water jets soak mop pad for a deeper clean. Refill detachable water tank in your sink. Use with cleaners of your choice or just water - microfiber mophead removes 99 percent of bacteria with water alone. Reusable, machine-washable refills deliver quick, easy and cost-effective cleaning.