These Wipe Out Sponges can clear stains from restaurants painted walls, floors, baseboards, switch plates, blinds, doors, windows, and appliances with minimal effort required and no chemicals or detergents involved. They are composed of water-activated micro-scrubbers, when wet these scrubbers reach into the roots of surface grooves and lift away built up grease and dirt. These chemical-free sponges are ideal for removing most types of graffiti and soap scum.