A dust mop is a long-handled mop that is used to dust floors and sometimes even walls, ceilings, and high places. Also known as a dry mop, a dust mop is meant to be used dry, and not wet.
Dust mops are frequently made of microfiber material to attract and hold onto dust. Dust mop heads are usually fairly flat and are frequently removable so that they can be washed and used again. Many dust mop handles are adjustable with extensions that allow the dust mop to be used to reach high ceiling corners and other out of reach places.
Dust mops are usually easy to maintain. In between cleanings, shake or vacuum the dust mop head. Sometimes this is best done outside. For more thorough cleanings, follow the manufacturer's washing instructions and allow to dry thoroughly.