Soon it’ll be time to get out the good dishes and glassware for holiday entertaining. If you have hard water in your home, chances are your dishware is hazy or covered with a whitish film. If so, don’t despair, there are some dishwasher detergent additives on the market that can make your glasses and dishes sparkle again. And switching to a top-performing dishwasher detergent will keep them that way.
Consumers started seeing residue on their dishes and inside the dishwasher after polluting phosphates were banned from dishwasher detergents a few years ago. Manufacturers responded by reformulating their dishwasher detergents to prevent such hard-water buildup and also developed additives to get rid of it. Consumer Reports tested three additives and, after some trial and error, all removed the haze from dishes and glassware and cleaned the dishwasher too.
We tested Finish Power Up Booster Agent, Glisten Dishwasher Cleaner & Hard Water Spot Remover, and Lemi Shine Original. When we used the same amount of each product—about 50 grams—all three worked splendidly. But when we followed Finish’s directions for machines with a prewash-detergent dispenser, the product didn’t work nearly as well. It did get the job done when we placed two tablespoons directly into the bottom of the dishwasher (following instructions for machines without a prewash dispenser). Glisten and Lemi Shine did their job as directed, though you may need a second wash cycle to completely eliminate buildup.