Glisten, the Machine Cleaning Experts, offers Dishwasher Magic, the #1 selling dishwasher cleaner. All dishwasher manufacturers recommend regular cleaning to maintain dishwasher performance. Glisten intensely removes limescale, rust, grease and other buildup caused by hard water, detergent and food residues. Over time, this buildup affects your dishwasher's cleaning performance and can lead to the presence of harmful bacteria. Glisten, the only EPA-registered cleaner and disinfectant, powerfully yet safely works in any dishwasher to eliminate buildup, disinfect the machine and restore its cleaning performance. Use monthly or as needed to keep your machine amazingly clean, fresh and maintained.