Lelit Grinder Cleaner Detergent Crystals Overview Ideal for weekly grinder cleaning, the Lelit Grinder Cleaner Detergent Crystals are food safe and sustainable cleaner designed to remove built-up stale grounds and oils from the burrs in your coffee grinder. Instructions for Use: - Empty the Bean Hopper - Run the motor to clear out any remaining coffee from the grinding chamber - Empty one packet of grinder cleaner into the grinder - Run the motor until all of the cleaner has been ground and dispensed - Refill the bean hopper - Run two grind cycles with fresh coffee Includes 20 Single Dose Applications of Grinder Detergent Crystals Safe for Use in Super-Automatic Espresso Machines