Use appropriate glass cleaning solutions and a microfiber cloth for cleaning glass surfaces and mirrors. If you are using a chemical cleaner, take care not to spill it on any of the surrounding finishes. Never use abrasive materials as they may cause scratches on the surface.
First remove any dust and other non-sticky spills. Then spray water onto the surface with a spray bottle. Plain hot water works best since it leaves no streaks. Wipe the glass surface or mirror down with a microfiber cloth.