wow i just used oxi clean to clean up some paulson $1 chips from my local casino. i figured i would try it out on them to make sure no damage was caused.
Oxy is good espeacilly with white color chips but with other color it is to strong. You might want to use mineral oil to bring back the original chips color.
so no prob doing pny/crystal park/vineyards. then a generous helping of mineral oil right? (joking, i read the posts about using as little as possible)