When your coffee and espresso machine's heating elements are compromised by mineral scale build up, water does not heat to proper coffee brewing temperature, causing coffee to taste bitter. Full Circle Descaling Liquid removes mineral build up such as lime scale from the heating elements of your machine. Without regular descaling, your coffee maker can become clogged, water becomes cloudy and overall performance and taste is diminished. Full Circle Descaler does not leave behind the lingering smell and taste of vinegar and contains only non-toxic ingredients. Descale once a month for coffee and espresso equipment that operates at its best and enjoy better tasting coffee! Includes 2 single use bottles.