Found 2 acoustic, a bass, a cheap electric and a SE355 hallow body clone on CL for $100. dirty as heck. One of the acoustics is an older yamaha thats seen some play time, and the hallow body has some time on it also. Both of the well played guitars has major ginger oils caked on the fretboard. I was curious what you guys use to get that grime off? Ive tried goo gone, rubbing alcohol i even used a blade once to scrape the crap off. I think it might also be smoke tar.