pipe cleaners work good for cleaning pipes, i'd assume they'd work good for wood too. Buy them from the local smoke shop or from the tobacco section at walmart if you wanna support them.
depends on the place, some will some won't. some tobacconists won't let you in the door if you are under 18
i would just buy some pipe cleaners and clean it that way.. i mean any liquid is gonna get absorbed into the wood and possibly warp it or make it start to get moldy and rot...
I meant pipe cleaners as in the bendy shit that kindergarteners make stuff with, not pipe-cleaning liquid products. But ya, buy a pack of pipe cleaners at a tobacco shop or from walmart if you need to. It's 8 cents for a pack of 25, they're definitely worth it.