When cleaning the keys, use a damp cloth on the tops of the keys. If they are hard to clean, you can use a mild soap solution. It is important to make sure no water spills down the sides of the keys and that they are all dried thoroughly.“I don’t get scared,” says Van Horn, who just happens to drive a rig called Grave Digger. “But sometimes when I’m trying to get big air, some 25 feet off the ground, that’s when I might get a little worried.