Soak the keyboard in water with a little Mr. Clean.

 

I've seen the same where I work. Computer will be less than 3 months old, and you'd swear they ate KFC everyday for lunch while surfing the web never wiping their hands. How can my keyboard that is over 5 yrs old, look new, and theirs be so nasty after a couple months. I had one lady who spilled coffee on her desk, and it ran under the computer. Must of happened yrs ago, and she never bothered to move the PC to clean it up. Yet they expect me to move it for her. Don't even get me started on how gross the phones are. :barf: