The descaling solution is used to eliminate mineral build-up in the boiler and ensure the machine's longevity. As part of normal preventive maintenance, espresso makers should be descaled approximately every 2-3 months, depending on the volume of use and hardness of your local water supply. Regular descaling is recommended to help avoid any major descaling requirements and related expenses. Saeco Liquid Descaler for superautomatic espresso machines. For cleaning and decalcification of espresso coffee machines.