The best and safest way to clean the C-More LED is with a lens cleaner (Birchwood Casey or something similar) and a small, soft bristled brush. Don't use stiff bristled brushes as they will damage the mask. Don't use a solvent as LEDs are plastic. The women's cosmetics counter is a good source for cheap, small, soft bristled brushes.
Flood the LED mask with lens cleaner and work the fluid in the hole with the brush. Use a lot of fluid and press the brush in and out over the hole. Repeating the procedure a few times for 20 or 30 seconds completely cleans out the hole without damaging the LED or the mask.
