Comment by hollandheese

>Besides if you're bothered by the dust you can use the water cleaning methods

Yes, because I carry large amounts of water around with me for every lecture that I teach. Seriously? The board is covered with dust, the chalk tray is covered with dust and the floor nearby is covered with dust. No one cleans them at my school.

The fix is just to use whiteboards which are just better for everyone who doesn't have a fixation with chalkboards.