Some casino's do clean their chips. There is a machine on the market, that you can buy or lease. I watched them clean chips at the gaming show last year. Does a good job. It is used mostly in Ca.

Here is the kicker, while I was watching them, the chips they were cleaning caught my eye. They were from a closed casino in Ca. Closed in the 40's. I begged for some. No dice, they had borrowed the chips from some old lady. I offered face, No dice! I went back the 2nd day, and pulled a Susong Roulette trick on them. I am ashamed of myself!!!! Hope Perlowski does not read this. Well, it wasn't a casino!!!!!!!