Anything you try, try on a the bottom first. Try an eraser. I have tried many things to get rid of marks on the tables and the marks have stayed and the color/finish has come off. I've end up having a small mark with a bigger discolored section around it. I now end up working on it over time with gentle cleaner that you would normally clean your table with and it will fade. If it is a real wood table Howard Restor A Finish works great to put some of the color back. It will be the first of many marks with a two year old artist. Six years ago I had the ABC's written, by my then 3 year old, on an $800 side table, I was so mad, now I think the table is priceless. Good Luck!