Yesterday, I spilled tea on my 15in MacBook Pro by accident. There was a little bit of sugar in the tea. It mostly just got on the lower right part where it is just plain aluminum but I got some on the arrow keys. There was nothing broken left arrow key now sticks a little bit and makes a funny sound when I press it. All of the other keys are fine. Is there anything I can do to clean it out? I can't imagine that it is sticking because of sugar because there was almost no sugar in the tea, but it might be because of that. If I take the key off, can I wipe below the key (and the underside of the key) with a damp towel? Or will this just make it worse? Should I get a replacement key?