Abstract: A mop having a self-contained and electrically powered wringer. The mop consists of an elongated, hollow handle wherein is placed a power unit. Attached to the power unit is a rod connected to a mop head consisting of an assembly of a cleaning device holder and a cleaning device. The preferred embodiment of the invention includes a housing for receiving the cleaning device holder. The housing in the preferred embodiment also includes movable rollers. The preferred embodiment is actuated by a switch causing electricity to flow to the power unit. The activated power unit causes a communicating spring acting against a spring stop to be fully retracted or projected. In the preferred embodiment, when the switch is released, the power unit causes the communicating spring to be fully projected. The process of retraction and projection of a cleaning device through the rollers results in the expulsion of water from the mop head. Also disclosed are alternative methods for the wringing mechanism of the mop.