Green Cleaning: While some janitorial paper products are unbleached, most products use a variety of bleaching processes to whiten the final paper. Some bleaching processes use elemental chlorine. This process produces Dioxin a known carcinogen which is persistent in the environment meaning that it doesn?t go away. The use of chlorine dioxide which is also know as elemental chlorine-free (ECF) reduces the amount of Dioxin by approximately 90 percent and is thus preferable compared to the use of elemental chlorine bleaching. The use of hydrogen peroxide and other compounds known as totally chlorine-free (TCF) bleaching can further reduce the amount of Dioxin and would be preferable compared to other bleaching processes.