Sorry about your keyboard. Don't recall having a corn nail me, but kings and milks are famous for it. Some do it no matter how acclimated they are, I guess it's just a natural defensive thing they do, (they are "wild" after all). Friends of mine have a very elderly cat that poops wherever he happens to be when it's time, and hasn't used his cat box in months, (double yuck!!), so thsy follow him around watching for any indications that he'a getting ready to go, then throw him outside. Of course they aren't around all the time so "accidents" happen, (no keyboards ruined....yet!). Yeah, the color coding is the selling point for me, and KY is the lube of choice. I'll be ordering them soon.
S