Starbrite Ultimate Magic Sponge Scuff Streak Eraser The Starbrite Ultimate Magic Sponge is an all-purpose sponge that removes dirt, grime, scuff marks, and streaks. This durable sponge is perfect for home, auto, RV, and marine use. Available in two sizes, use the Ultimate Magic Sponge to wipe away stains on fiberglass vinyl, plastic, metal, painted wood, and more. Features Removes ground-in dirt, scuffs, stains, soap scum, mildew stains, and more. For use on vinyl, plastic, fiberglass, metal, p