Believe it or not, cigarette ash works. An old friend who was in the army told me to dip a damp cloth in some cigarette ash and just wipe the marker. I tried it, and it really works. ... View related article.
Bicarbonate of soda is excellent for removing mildew. In fact, I use bicarb for most of my cleaning. Just mix equal amount with water and presto! ... View related article.