dripguards grey refrigerator sponge – catch leaks from water dispensers and ice machines (2 pack) dripguards refrigerator water dispensers leak and spill even when well designed. minerals build up on the valves over time, allowing water to drip after the water switch is released. fluctuating water pressure and ice caught in the dispenser also creates dripping. water stains and residue then build up on the metal or plastic tray of your refrigerator water dispenser. dripguards are a polyurethane foam dish with a clean, sharp look and high-water absorbency. they reduce splattering and absorb hard water minerals. every package comes with two sized guards, in gray or black, to fit nearly any refrigerator dispenser.