We have a little beach get-away down in Baja. Lots of Black Widows. Problem with them is they like to hide in dark places, like under the toilet seat!!! Well, I guess that's a good place to catch flies, but.... look out! Went down one December and found a Rattlesnake in the house, hibernating. Got in under the door because I had not installed the threshold yet. I tried to scoop it out with the shovel, but it had other ideas. So I ended up chopping its head off with the flat edge, and even then the mouth was still clamping down trying to bite me. I put the body in the Fridge overnight and skinned it the next morning. While I was getting the skin off, the carcass was writhing around and wrapped around my arm! Very weird. After I got the skin and rattles off, I took it down to the beach for the birds to eat. The headless naked carcass then coiled up and the neck stump stood up in a strike position! Those birds would not go near it for at least an hour until the found out it was harmless. Someone told me that by putting it in the cold Fridge, I slowed down the metabolism. But still, what do you have to do to kill one of those things!!