The drive unit is operated by an electric motor or an IC engine, and its drive occurs by the rolling of a gearwheel on an engagement device along the cleaning path. The engagement drive is formed as a holed rail (4) which has a hole arrangement (4.2) matching the toothing of the gearwheel (2) and is spaced from the plane of the cleaning surface. Near to the running plane (4.1) of the holed rail (4) and arranged ahead of the gearwheel (2) in the running direction is a cleaning unit (11). On the opposite side of the holed rail (4) to the gearwheel (2) a holding device is so arranged that a secure engagement of the gearwheel (2) when it rolls is ensured. USE/ADVANTAGE - The cleaning appts. for removal of manure from cattle stalls has a secure drive and adequate traction.