This solution is for the removal of hardened milk scum and the sanitising of steam arms, automatic frothing devices and milk jugs. Needs to be used on a regular basis to make sure your coffee machine stays fit and healthy! This solution breaks down any hardened milk scum that you might find inside milk hoses, on milk jugs, frothers and steam arms. To use mix 50ml of this solution with 500ml of cold water. Each bottle contains 20 uses. Auto Frothers and Milk Hoses: Run mixed solution through frothing device and repeat with fresh water twice. Soak all milk lines and frothing components in the solution once a week for up to 30 minutes and rinse thoroughly. Always consult with your machines manual. Steam Wands: Steam the solution in a jug, as you would do to milk. Turn the steam on and off over a minute period allowing the solution to work its way up the steam arm. Repeat this process twice with fresh water.