The present invention relates to an application device for treating the teats of milk producing animals with a liquid. The device comprises a dip cup with a fluid supply conduit having an outlet through which liquid is conveyed, wherein the cross- sectional area of the outlet is larger than the cross-sectional area of fluid supply conduit. In a further embodiment, a baffle is provided to deflect the treatment liquid is a desired direction around the inside of the cup. In a still further embodiment the invention a fluid supply conduit is defined at least in part by the external wall of the dip cup.