you don't necessary need to use alcohol to wash the keyboard... water is actually fine if you dry it up in reasonable time.
I have a deck keyboard with black switch.. for the first three years of college, due to the lack of space, I always eat on my desk. I believe I have spilled coffee, ice tea, all kinds of juice, coke, etc on my deck black cherry key.
But you know what, I just dissamble the whole thing and wash it under hot water.
I generally keep the water running for roughly five minute while pressing/tapping all the buttons that has been spilled to make sure the inside is clean as well....
Then wipe it down, Q-tip all the little creeks, then follow up with hair dryer on high for half an hour...
for as many times I have done it... it still comes out and work just like before the spill
8 years later, that keyboard is now still server as the living room entertainment center's keyboard