Hi David
Chipmunks
are about as bad as it gets around here. Only danger from them when they run through the shop, is if you are laying on the creeper under a truck and they decide to run across your chest. You sit up quickly, of course, and wail your head into the drive shaft.
Go ahead and laugh it happened to me.
But the real damage is if you forget to plug up engines, radiators and exhaust in the late summer as they start collecting acorns and need winter storage.
Cheers Phil