Fretboard cleaning without steel wool
My RG2027 (which I just bought used) has a really dirty fretboard: the previous owner seems to have not cleaned it in ages. There is crud all over the rosewood, and the frets are quite oxidated. I apllied lemon oil and rubbed it over with a rag: about 75% of the dirty is gone, but I'm not at 100% yet. I am just really scared of trying things like steel wool (and I can't find anywhere the 0000 grade), so I wish to know if there are others good way of getting rid of the dirty without harming the fretboad. What about cleaning the frets?