WINDOW CLOTH: Great for cleaning and polishing glass. Lightly mist the surface with water and polish with a dry Window Cloth. For heavily soiled surfaces, first clean with a moist EnviroCloth, then finish with the Window Cloth, wiping in the same direction as the grain. Slightly dirty microfiber can be washed with Norwex Dishwashing Liquid under warm running water and used again before laundering. Do not use bleach, fabric softeners or dryer sheets when laundering. For deep, stubborn stains or odors, microfiber can be boiled for 10 minutes to allow fibers to swell and release the debris. Rinse thoroughly after washing and air or machine dry. Do not use on anti-glare coated surfaces."