Originally Posted by 2pipes
Wipe them off between games and wash with water after the day of play. No issues with mine.
I carry a micro fiber in my pocket and wipe my mask and hopper after each game. At the end of the day, a wet rag wipe down and dry it off. This is the same process with dyed Spires. If you let paint sit on the plastic for long periods, it will stain.
For stains, you can try alcohol on a rag or maybe the Rit dye remover would work. I haven't tried it yet, but some of dye remover on a rag might help.