1. Pour half of one bottle of Essential Values Descaler into your machine's reservoir and fill the rest with water (Remove water filter if applicable) | 2. Brew one full reservoir without coffee or pod, using the large cup setting (if applicable) | 3. Remove any solution not used in the brewing process | 4. Brew 3 more pots / cups using only water, then resume regular brewing. We recommend descaling every 1-3 months |