Kilrock-K Descaler is the original multipurpose descaler, nothing performs like it. Ideal for metal and plastic kettles, steam irons, WC pans, showers, etc. Cleans heavily scaled kettles in minutes. It has a phosphate-free formula and is biodegradable. Please note it is the Retailers responsibility to ‘Report a customer’ to the Police if they are buying large quantities of a product or if it is anyway suspicious.