A mold inhibitor is described which is a combination of a salt of propionic acid and an essential oil. A molded unit for the squeegee head includes a channel shaped mounting plate having a web portion between a lower flange portion and an upper flange portion. In the housing, a double plate assembly has a double structure and is comprised of a front plate and a rear plate. Tables can communicate with each other, a remote host, andor player controlled auxiliary or hand-held wireless devices, which may be adapted for backbetting.