THis is BS. We are talking about cold blooded snakes. A trip to the freezer puts them to sleep and kills them... This IS the most humane way to put down a snake.
If I had found the snake, their would have been a very simple, immediate solution. I would have hopped back in the car and ran its head over.... Ceasing all brain function instantly.
Keep it simple stupid. (not saying the origional OP or anyone else is stupid!... It is a poplular saying!)