Abstract: A livestock enclosure washing assembly for automatically spraying down a livestock enclosure to remove dirt and waste materials includes a cart movable within an animal enclosure, an adjustable articulated arm that rotates around the cart in a settable range, a pivoting spray nozzle for spraying in and out from the cart as the articulated arm rotates around the cart, and a pressurizing unit for dispensing a pressurized fluid through the spray nozzle to effectively remove dirt, debris and waste material from surfaces contacted by the pressurized fluid spray.