I don't know if I would wait, someone else might not. How about a some of those bug foggers, a couple of cans of Chem-tool, wasp spray, a hammer and a shot gun.
I actually took a harness out of a '70 Cuda in one of those backwoods wrecking yards. Long sleeve shirt and pants, duct tape the cuffs to prevent critters from the sneak attack. Of course, being younger then I didn't even think about snakes. Some of those Mechanix goves might help if you can narrow it down to just critters.