. . . . "The air inlet conduit 70B can extend outside and/or along the reservoir 16B. In some embodiments, the air inlet conduit 70B can extend above a height defined as the maximum liquid filling level of the reservoir 16B. For example, the reservoir 16B can include indicia, such as a tick mark, text, etc., indicating the recommended maximum fill level of soap in the reservoir 16B. With the upper end of t" .