Radio Buttons

The radio buttons on my dawoo stick because coca-cola spilled on the radio. There is the sticky gummy feeling when I press one of the buttons. Any suggestions?

Other than cleaning it off with a small damp towell. There's this Cleaning solvent spray made my 'Miller-Stephenson' that we use at work to clean flux off of PC boards after soldiering. It works kind of like freeze spray but it removes the sticky flux completely off the board and it disintegrates/dissolves or dissipates if you use a small amount of it, but even if you use a big amount it still ends up dissipating and its safe. There's no chemical hazard. It would be ideal for cleaning off liquids spilled on computer keyboards and what not and i would think this stuff should work. I've never seen it before in stores but there should be something similar at kragen auto parts or radio shack or a hardware store, maybe. Just look for some kind of electronics cleaning solvent spray.