Stain remover for metal, porcelain and glass. Dip-It cleans percolators and cookware where rancid oils build up in your percolator coffee maker and ruin the taste of your coffee.  A solution of Dip-It Food and Beverage Stain Remover soaks out these stains and oils.  You will find that coffee tastes better from a clean coffee percolator. Dip-It is also suitable for soaking crockery, cutlery, plastics and melamine boxes and trays.