Around the House : Remove Permanent Marker From Glass

You left a permanent marker on the coffee table and your child went to town on your living room window.

Use chalk and you will be able to scrub the windows clean, though you will have to explain to your child why you didn't like their art.

Calcium carbonate, the main ingredient of chalk, contains sharp grains which rub the marker from the glass. It's the same ingredient used in toothpaste and not abrasive enough to ruin your window.