OMG, this device works! Tried several other "fancy" mole traps, tried poison, smoke, water flooding, everything. Only this trap finally got this little sucker. It's a little bit tricky to set it up and instruction are not clear how to install it underground, but once you have learned it's really easy and effective. The track looks like a medieval torture device and works like one :). But result is guaranteed if you set it up right. Just uncover a tunnel, pale the trap deep enough do the jaws are right at the level of the tunnel, and only then cover the tunnel with the trap inside with soil. Do not compress the soil, let it be loose. Don't forget to undo the safety hook after that. Again, this is the only mole trap that works!