Abstract: The invention disclosed herein is a structure for use as a pre-wash station for commercial dishwashing systems which is adapted for use with existing dishwashing systems. The structure includes a basin with a slanted bottom to allow the drain of waste material from the basin and includes a rack for supporting dishes which have been stacked in a carrier and which are to be processed at the pre-wash station. The rack has large openings to allow the waste material to fall into the basin as the dishes pass through the pre-wash station. One end of the basin is designed with a lip which will attach into the opening of the commercial dishwasher with which the pre-wash station is used and which has an edge positioned in such relationship to the rack so that when the carrier holding the dishes is moved from the pre-wash station into the dishwasher, the edge will scrap any waste materials off the bottom of the carrier.