Shirley,

Welcome to the BB.

I don't clean many of my chips, but when I do I use Amway's L.O.C. (Liquid Organic Cleaner and a baby's tooth brush (much softer than a regular soft toothbrush.)

I put a few drops of L.O.C. on the chip and brush very lightly. I so this to remove the surface dirt. If the chip is extremely dirty I generally leave it alone. It sometimes looks better dirty.

Hope this helps.

Scott