Keurig brewer performance matters! Descaling is an important process that removes calcium deposits, or scale, that can build up inside a brewer over time. Calcium and scale is non-toxic, but left unattended, it can hinder your brewer's performance over time. Descaling should take place every 3 to 6 months to preserve the long-term health of your brewer. Helps extend the life of your brewer (when used regularly) Removes calcium deposits that can build up inside your brewer Descaling is recommended every 3 to 6 months Compatibility: Compatible with all Keurig K-Cup, Keurig 2.0, Rivo and Vue brewing systems.