Preparation material : Cooking oil, Kitchen Towel
1. Put the cooking oil on kitchen towel and put it on the mark.
2. Leave it 3 minutes to get cooking oil wet enough on the mark.
3) Scrap it off the mark with kitchen towel and some part will tear then peel off easily.
There is instruction to remove abrasive surface with cooking oil.
This way can be used at the first stage if this stain found.