From the makers of Re-Play, the Scrub Genie is a temperature sensitive, all-purpose scrubber. The hardness of the scrubber changes depending on cold or hot the water is. Warm water softens the scrubber for light duty scrubbing and cold water hardens the scrubber for heavy duty scrubbing. Plus, the other side of the scrubber is a cellulose sponge which is perfect for wiping counters and other surfaces.