Can anybody tell me if Pledge Natural furniture polish will harm the finish on my guitar at all? I have an Ibanez BTB405QM in black/purple and have never polished it. I want to get any grubby finger marks off of my guitar but I dont wanna spoil the finish. Does anyone know if normal polishes make the finish go cloudy or start eating away at it?!? Can anyone recommend a polish?!? I appreciate any help!!! Cheers guys!