Keep it Clean is the duct cleaner that cleans your irrigation systems. Keep it Clean contains hydrogen peroxide and copper to prevent bacteria and algae from growing in your reservoir and irrigation systems. The dosage ratio is 0.1 ml per liter or 0.4 ml per gallon. The product is manufactured under strict quality control in the Netherlands. Do you want to keep your reservoir and irrigation system clean? Keep it Clean is your product. Make Growing Simple Again.