Clicking/ticking Next Page Button

[twowheels]

My next page button on the right side (the one I use the most) has started to click... it's faint, but enough to really bug me. I don't think that it's actually broken, I more suspect that I touched it with sticky fingers and there's something sticky that's breaking free as the button starts to press as it happens at the very lightest touch of the key before it activates the physical button underneath.

Anybody else had this happen? Did cleaning around the button work? If so, what did you use? I'm not comfortable slathering the area with rubbing alcohol as I don't want it to get inside the case at all.