How do I clean my dart?

The dart is held into the mouthpiece by a small black silicone grommet making it removable, for easy cleaning. 

Be fairly gentle as the dart itself is made of ceramic. To remove the dart you can push it out of the mouthpiece by pushing through the top of the mouthpiece with a cotton swab.

The dart itself can be cleaned using ISO, though you should not soak any gunmetal parts of the unit in any alcohol based cleaning solutions.