A method of cleaning a plurality of teat cups (8a-d) comprises the steps of using a robotic manipulation device (2) to move the plurality of teat cups (8a-d) from a first position to a second position, and cleaning the teat cups (8a-d) at a second position, wherein the robotic manipulation device (2) deposits the teat cups (8a-d) individually, in turn, at the second position.