Bill,
Insects inside a keyboard can damage the electronics, especialy if they happen to take up residence in the wrong place and deposit some insect droppings on a low-voltage circuit board. It doesn't take a lot to trash one of the ICs or chips.
Good luck and I have you get the varmit!
Gary
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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)