Watch rust, burnt or baked on food and calcium deposits disappear before you eyes when you use this polishing eraser. Using the abrasive properties of SD diamond sponges, which are designed to remove tough stains and marks, simply use as you would an eraser for those stubborn marks and stains around your kitchen. Ideal for removing stains from boil-overs or sticky residue, this eraser is not suited to remove oil stains. Also recommended to clean around drains, pots and frying pans.