MEK is spooky. I work with it all the time, and still don't like it.
Citrus cleaners work well...GooGone works OK....Acetone will work very well, (nail polish remover, basically)...
If you have to scrape, I'd stick with a scrubbie made of plastic...although some of the harsher solvents, (acetone, toluene), will eat through certain plastics too!