The cleaner to be tested was Water Works Heavy Duty Degreaser 1:4 dilution (the highest vendor recommended dilution). Three types of substrates were supplied by the company, being copper rings, steel discs (female) and steel discs (male). Two soils were tested, soil A. Moly Dee (the most difficult soil for the company to remove), and B. Tap Magic EP-extra (the most used soil). Three coupons of each substrate were used for each soil, meaning a total of 18 coupons were used. The coupons were soiled by dabbing the soils on using a swab. The coupons were then subjected to 15 minutes of heated immersion at 105 degrees F with a stir bar set to 200 rpm. Once the coupons were removed, their cleanliness was determined with a white glove test. Each coupon was wiped with a white cotton glove. If any soil came off onto the glove the coupons were declared to still be soiled. If no soil came off onto the glove the coupons were declared clean.