Important Note: This item is not returnable Single-serve brewer cleaning cups feature an easy-to-use design that offers a simple way to clean your brew chamber and exit needle for better-tasting coffee. Cleaning capsule uses odorless ingredients and phosphate-free to safely remove coffee residue and oils inside your machine to prevent them from altering the flavor of your coffee. Cleaning cups are perfect for use once a week or whenever you change between sweetened beverages and coffee or tea.