An automated sprayer for spraying the walls of a shower enclosure with a liquid cleanser is disclosed. The sprayer includes a bottle suitable for containing the liquid, a housing, a pump located in the housing wherein the pump is in fluid communication with the bottle, a rotatable dome-shaped spray head extending away from an opening in a surface of the housing, a spray nozzle positioned such that an outlet of the spray nozzle is positioned within an opening in a side wall of the rotatable spray head wherein the spray nozzle is in fluid communication with an outlet of the pump, a motor located in the housing, and a transmission operably coupled to a shaft of the motor, the rotatable spray head, and the pump. The transmission transfers rotational motion of the shaft of the motor to drive the pump and cause rotation of the rotatable spray head such that the liquid is sprayed radially away from and around the housing thereby providing a circular spray pattern that contacts the walls of the shower enclosure.