The best method of getting rid of mold is to use one quart of soda with one gallon of warm water. The soda serves as a detergent, losing the mold and stains. Begin the cleaning process by wetting a sponge. In a circular motion, scrub the cushion with enough force to remove the visible mold. Continue to clean the moldy areas using this circular scrubbing process. Be careful not to spread the mold onto unaffected spots. This method is for spot cleaning, not general cushion cleaning.