Dear Consuelo: I did a bit of freezing when my secretary got upset by finding a bat
in her office. I didn't want to hurt it, so I got a spray vial of ethyl chloride, which
used to be used to reduce pain from needles (not very effectively) and sprayed
the bat just enough to make him drop into a basin held under him. I think maybe
it acted as inhalation anaesthetic. But I took him outdoors, and in a few minutes
he flew off.