Not sure about the voltage but I’m thinking it may be lethal for small critters. If I found a snake in my house, I’d be high tailing it out of there. Snakes and me don’t mix well. After 24 hours there’s been no activity at the trap. If it’s triggered, a red LED illuminates.Is the shock enough to kill them or does it just teach them not to go near the trap again? We live on the edge of the woods andI have a rabbit issue occasionally. I keep a pellet gun by the back door and if I see one I just take care of business that way. We had an issue where mice were getting into the basement and being hunted by garter snakes. I’ve caught and released 4 snakes over the years and a couple were quite large. It’s a little startling when you reach for something on a shelf and see a 2’ snake looking at you. Luckily my basement is cool and they were sluggish. I found where the mice were getting in and sealed it up. Haven’t had an issue in a while.