[AZ_ST]

Hi All,

I recently bought some used ex-casino chipco chips and some are a little dingy looking, particularly the white parts. I cleaned them all by hand with a little soap and warm water and that took off the surface dirt and smell, but most of the white chips and edge spots still look dirty or stained. Any thoughts on how to brighten up the chips a little? Is there "chip bleach" or something like that? Or like all porous materials are these likely to remain a little stained? Thanks for any help!