Originally Posted by cv350

I try the most gentle method first. Usually a soft rag with water, then with a small amount of dish soap, then a gentle general purpose cleaner.

Other successes have been achieved with a paste made of baking soda, water, and dish soap. Baking soda is an effective cleaner and polisher and is gentle.

Stronger cleaners and removers certainly exist, but assess the mark being removed and the material that is being worked on, so as to remove the mark without damaging the surface or
surrounding area.