I'm probably reiterating what others have said, but if this trap does not work, then you are using it wrong. The trap must be in the path of the tunnel, otherwise it won't work at all. Additionally, do not put it in the tunnel at the point where a mole digs up to the surface to push dirt out; the mole will typically defeat the trap because they don't go through the trigger as you'd expect. Do not over-compress the tunnel or overfill it when setting the trap. If you want to put it on top of grass, try to 'cut' the path the trap will slam shut across so that the ground doesn't impede the trap. Remove small rocks and bark so that they don't jamb the trap when it closes. If you learn to use this trap right, you'll get rid of plenty of moles. On the downside, there is no shortage of moles in the world and, inevitably, you'll see more in the future. That's the downside of having a healthy lawn with lots of yummy food for the moles.