How do I descale my Keurig K Cafe and how often should I do it?

You should descale your coffee maker every 3-6 months using Keurig Descaling Solution. The process involves three steps: a cleansing rinse with the descaling solution mixed with water, a 30-minute internal tank soak, and then at least 12 fresh water rinse brews using the largest brew size. The entire descaling procedure takes approximately 45 minutes. (Page 5)