All Bar Maid Glass Washers install in virtually any sink in seconds with no special plumbing or electrical hook-ups. The center brush scrubs the inside of the glass, while the four outside brushes simultaneously clean the outside. Nothing gets glassware cleaner. Using a two or three sink system, a LoSuds detergent is used with the machine to wash followed by a rinse/sanitize in the second sink or a rinse then sanitize in the second and third sink.