I got popped by a skunk once. I seen the green mist coming and dodged 90% of it. I headed straight to the grocery store to stock up on tomato juice (it really does work). It was too funny as each person in line insisted that I go to the front. :o

Db is likely onto something with the anise oil. That has the ring of something that would work very well. I'm not versed in the art of deadfalls though. I suppose if I did a really remote trip I would learn about it.