I think they are attracted to the warmth of a loaded cable, can or transformer.
I see lots of tunnels near the sub feeds and have found dead ones curled up by the doorbell transformer (not before putting my hand down on it first...eeeeeeoowwwwweee....poor little guy.
The tooth growth thing explains the chewing.

Last edited by ChicoC10; 07/29/10 10:40 PM.