The ‘Cleaning Brush’ is specifically designed to thoroughly clean the Beer Tube after use. It is made with special custom designed soft fibres that do not harm or scratch your Beer Tube. At the conclusion of use simply fill your Beer Tube with warm soapy water. Use the Cleaning Brush in an up and down motion to thoroughly clean your Beery Tube. Then simply rinse out the Tube with fresh clean water. Then allow the Beer Tube to dry out in the air. Easy!