My girlfriend was eating tortilla chips and nacho cheese last night... This morning I woke up to play my Cirrus 6 Bubinga with a rosewood fingerboard to find a disgusting dark yellow gloop on it. My bass was sitting BEHIND her, and somehow she got about a 1 cm x 1 cm glob on the fingerboard. Couldn't tell if it was rat poop, chocolate, or what, till I smelled it up close. I cleaned most of it with a papertowel and water, but there's still a small smudge on it. What should I use to get it out? Alchohol? It rather smells bad too.