The Cleaning Assistant is designed to be used by persons with physical and cognitive disabilities whose condition(s) require the use of a diaper. The Cleaning Assistant allows for an individual’s caregiver to clean his underbody quickly and easily after a bowel movement. A toilet-mounted device system consists of four nozzles for pressurized water spray and two nozzles for soap spray. The water system is supplied by the existing hot and cold water supply that goes to the bathroom sink, thus allowing all permanent plumbing connections to be made under the sink. Small-diameter plastic tubing is used because it is flexible and inexpensive. The mixing valve ensures that the temperature of the water is appropriate and consistent. A manual hand shut-off value enables simple control. Small water jets spray a “v” shape stream to cover a maximized surface area. Four jets ensure that the entire service area is cleaned.