[MartijnGizmo]

Airtubes are the way to go. If it doesn't help, go to an art-supplies-store and get a good small nylon-brush, for like 10 bucks ("VAN GOGH 294 SELECTED FILAMENT - ROYAL TALENS" for example). For the first time, clean it very good and let it rest in a glass with some water/dishsoap-sollution for a while. After that, rinse it of with water again and let it dry completely.

Ok, now to using it: blow through the hairs with your blowtube so they get staticly charged. Use the brush to gently wipe your sensor and repeat if needed.


Or, if you don't trust that, go out and get a Visible Dust Sensor Brush, that is essentially the same but costs $100! There are also some wet sollutions like Sensor Swabs, but they should only be used if nothing else helps.