So I'm changing the strings on my acoustic guitar and I just want to remove the dust from the area underneath the strings and the fretboard. I'm out of guitar polish so I was wondering if there was something else I could use instead. Thanks.

Ibanez RG350EX
Yamaha FG730S
Peavey Vypyr 15 watt
Korg CA-40 Chromatic Tuner
Fender 351 Medium Guitar Picks
Use a damp cloth. Wring it out thoroughly first. You don't want it dripping wet, just damp to the touch. Then follow it up with a dry cloth.
Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band
Meguiar's Cleaner Wax in the burgundy bottle for the finish and the metal bits.

And plain old mineral oil for the fretboard. As little as $11/gallon, depending on how diligent a shopper you are. Will last you a couple of lifetimes if you don't start taking into the bedroom with you.