I just got a big lot with alot of titles i need for my collection unfortunately there is sharpie across the back of half of them. I've already read some threads that discuss taking a q-tip with 70% alcohol on it to clean the connections of a game every once in a while. But what have you all found to be best for getting rid of Sharpie and Rental stickers without damaging the cart or label?

Thanks in advance,
Malk