Quote Originally Posted by SMurf View Post
Assuming that you remove all the electronics from it first, then you should be left with plastic and rubber. Those should be fine to machine wash, although I've only hand-washed mine (an old Dell keyboard that had absorbed pretty much everything members of my family had been eating while using it).
Even the board should be fine to wash assuming you ensure everything is discharged before it touches water and you give it ample time to dry. Likely however, you'll have a great risk that it is not completely dry as I imagine there is something in the keyboard that would soak water. Anyway, I've heard of people washing power supplies, having them work afterwards.