Dishwasher Magic is scientifically formulated to eliminate all forms of build-up in your dishwasher to clean your dishes better. Over time, your dishwasher can lose its cleaning effectiveness due to build-up of lime, calcium, rust, grease and detergent residue. Leftover food waste and stains can lead to the formation of harmful bacteria. Dishwasher Magic is an EPA Registered Disinfectant designed to kill 99.9% of harmful bacteria in the dishwasher. It’s easy to use liquid formula eliminates odors caused by food and residue that detergents leave behind.