Ok, shamefully, if I see a snake, my first reaction is to throw something heavy at it. My mind does not say, "Oh, well, that is a so-and-so snake and is completely harmless." My mind says, "AHHHAAHAHHHHAAHHH! SNAKE!!!!! Throw something at it!"
We have harmless garters, and black snakes that are not poinsonous, but still could easily eat chicks, copperheads and water moccasins (you might call them cottonmouths." Pretty much any snake I see is dead meat because of my kids. Sorry.
That said, I generally leave the garters and black snakes alone, but the blacks get BIG here. Once when my dear husband was mowing, he interrupted a black snake eating a big nasty creek rat. Did the snake lose his lunch and run away? Nope, it raised up and tried to strike my husband with the rat still in its mouth. Yup, a snake beat my husband's leg with a dying rat. That's life in West Virginia.
I'm liking the snake trap...wondering who I would get to empty it. Hmmm....