The Engineers who designed this sink had EVERYTHING possible added to their design. Like most households, we toss 99% in the Dishwasher. But the RACK that prevents scratches to it is WONDERFUL as is the HOLE above the Disposal Opening. LOVE THE ROLL OUT Dish Drainer and THE BUTCHER BLOCK Wich floats in the Tracks is a LIFE saver! KUDOS to YOU ALL !  BEST SINK MADE on EARTH!