Using chemicals to combat limescale is time consuming and expensive, so this eco-friendly solution makes a lot of sense. Pop the Magnoball into your dishwasher or washing machine and its magnets reduce limescale by crystallising the particles preventing them from settling in your clothes or clogging up the heating elements and pipes. It means you can save on plumbers' bills and save energy by washing at a lower temperature! Use the Magnoball over and over again - it's guaranteed for 5 years.