The magic eraser method sounds good. Probably easier on the hands. I used the Dawn bath with dish pan type scrub brush. After my first batch of chips it was necessary to wear a glove on the chip holding hand. I was holding each chip in my palm and going at it with the brush, not realizing I was brushing the exposed skin on my hand too! The method did work fine though (with the glove). Quick soak in warm dawn bath and take each chip making a circular motion with the brush over the chip, then if any stubborn spots remained, an up and down or side to side brush as needed. All my chips cleaned up great. LOT of work though so now I TRY to buy new chips whenever possible.