Humane to a point. Is better to break the neck of the mouse than to strangle it. It is way less messy as far as clean up but the mouse is strangled. When compared to the spring action "watch your fingers" bait trap, true, it is not 100% either. At church, we were lucky to have one mouse propelled 6' feet back with a broken neck & no blood easy clean up. This thing is weird but very versitile. Hard for a squirrel to get caught. What about AZ lizards? Worried!
What a great Product! Mice of any weight have no chance. I watched them dance on clip traps (too light to trip). Very first night this trap was set got the mouse!! Just as advertised inches from trap with no mess.