The food-safe and biodegradable citric acid intensely and thoroughly descalers. Harmonizing humans and nature in the household: The Swirl Citrus-Clean Bio-Descaler meets the need to care appropriately for oneself and the environment. The careful consumption of electricity is only possible with descaled hot water devices. Stubborn limescale deposits on precious metals hinder heat transfer. The biodegradable citric acid is ideal for cleaning coffee machines and single-serve devices.