Delimer\/Descaler eliminates scale and lime formations from hard water precipitates in your dishwashing machine. It performs very well as a concrete, hard tile and grout cleaner to strip slippery or oily buildup. This acid descaler is formulated from renewable resources (citric acid) and rids machines from buildup without using dangerous chemicals. Bottles are color-coded to be used in a proper dispenser. Delimer\/Descaler is approved by the EPA Safer Choice\/Design for the Environment Program (DfE).