A few weeks ago I bought a dry erase board for the open house my friend and I had. It's a great size and price and was perfect for what I used it for that day! (as you can see in the picture)
Well as much as I erased the writing I noticed it didn't come off fully, there was still a slight ghost image left that you could see from an angle. The first thing I thought when I noticed this was that I don't remember that happening with older dry erase boards. I could simply be remembering wrong (which is very possible since we had chalk boards when I was in school through college #2 at least!). So anyway, I just sat down with my lotto tickets and write the numbers up on the board to check (only got 1! number *sigh*) but I noticed that either I didn't press hard enough while erasing or something because there was a light black smear left on the board. Well that reminded me that I wanted to look online for homemade cleaning solutions, figuring there had to be something out there to save me some money. So a quick google came up with results, the first of which was an ehow write up. There were a few ideas, two of which were a water/vinegar solution (which I don't have a spray bottle handy to make) and the other was hand sanitizer (both using a soft cloth).
I tried the latter and it worked like a charm! BUUUUUT I only have sanitizer with moisturizer at home so that left a film on the board. No big deal, I simply grabbed another soft cloth (both of which were clean socks with holes in them that I had tossed in my bedroom's garbage can, but am going to keep to use for this) and dampened it then gave it a rub down. That took care of it perfectly, I even tested it out with a marker and it was fine! Since I'm using this for pictionary at a NYE party Saturday night, I gave that a sanitizer cleaning too to make sure it's all nice and clean before hand.
So there you go, a cheap and easy home remedy to cleaning dry erase boards.