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. Cleans Percolators and Cookware Removes Food & Beverage Stains from Metal, Porcelain and Glass For Better Tasting Coffee Use