Kishu Charcoal - Activated Charcoal Water Filter for Pitchers 2-pack Kishu Charcoal for Pitchers is the simple, elegant way to filter tap water Simply place in any 1-2 quart pitcher or carafe, add tap water and watch Kishu go to work Kishu bonds with toxins and imparts good-for-you, minerals One stick can be used for 4 months After 4 months, Kishu can be reused as a deodorizer in the refrig or broker up and placed in the garden where it helps with water retention