Rubbermaid Commercial - RCP1820583CT Large microfiber cloths deliver superior cleaning performance for light commercial use. They remove 99.9 percent of microbes. Quality microfiber withstands hundreds of launderings and 100 launderings with bleach. Bulk supply of reusable cloths makes sure you have plenty to clean for long period or large buildings. This cloth is blue, and cloths are available in other colors to let you color-code them for specific uses.