I went into that storage area yesterday and didn't see any evidence of bats roosting in there. Hopefully we'll be able to resolve the problem by patching that hole in the mesh in our furnace exhaust. I'll get in touch with Angeline so we can exchange e-mail addresses.
send me an email and I can help you out.
DK or Angeline or Cindy all have my address if you don't happen to have it.