The present invention relates to an unmanned self-propelled and self-steering device for removing manure present on a floor, including a manure slide with a sliding wall which, when viewed in the customary direction of travel of the device, forms a first contact surface for manure present on the floor, and comprising a drive device for the travelling over the floor, wherein the drive device comprises a rotatingly driven drive which is in driving engagement with the floor during operation and which is located in front of the sliding wall.