I know this is probably been asked before but I couldn't find it. What cleaning things are safe to use on an acoustic guitar? It has managed to accumulate a few spots that just rubbing isn't getting off. I think I've heard like furniture polish is good but I just wanted to make sure before I went and ruined the guitar or something.
Schecter Diamond Series Omen 6 & Ovation CC24 & Ibanez GSR200
Digitech GNX3
Line 6 Spider 2 112