Cleaning tools used to clean impervious surfaces. They can be made of a soft porous material which absorbs soap and water, tough synthetic fibers used to scour a surface, or coiled stainless steel to clean hardened stuck-on or baked-on materials. These cellulose sponges are 10 times more absorbent than polyurethane sponges.* Stronger, less likely to fall apart. A size for every clean up need.