Most of these coffee machines will come with instructions on how often you should clean them. The steam wand or frother should be cleaned with a damp cloth after each use. It is also a good idea to clean the grinder and other parts once a week. For most machines it is simple. Simply remove the used coffee grounds and unused milk from the frothing jug, and flush them out with water. Some machines require special cleaning solutions, while many cheaper models can be cleaned with just water and detergent. Keeping your machine clean prevents it from breaking down or getting clogged up. It also keeps you safe and healthy in the long run.