The Bettina Magic Eraser Sponge features powerful micro-scrubbing technology that makes quick work of tough stains, dirt, and grime on various surfaces. It's safe to use on walls, floors, appliances, and more. Simply wet the sponge, and no detergents are needed. This pack of 4 sponges is ideal for removing finger and crayon marks, limescale, scuffs on car plastics and bumpers, and general household marks. However, keep in mind that this product may scratch polished, satin, and brushed finished surfaces. Store out of reach of children.