Apparatus and a method for cleaning milking stalls (3) on a platform of a rotary milking platform, wherein the rotary milking platform comprises a robotic manipulation device (9c) configured to perform a primary task. The apparatus comprises a holding device (19) configured to hold the end portion (18a) of the hose member (18) in a predetermined parking position (Po), and a control unit (11a). When it is time to clean a milking stall on the platform (2), the control unit is configured to activate the robotic manipulation device such that it instead of its primary task performs an additional task in which it grips the end portion of a hose member the holding device and moves it from a parking position to a number of cleaning positions (Pn) from which liquid jets are sprayed from the outlet opening (18c) of the end portion against predetermined surfaces to be cleaned in the milking stall.
