clear 100% efficiency. But you have to first time practicing in the 'position' the right attachment. First time I tried to exit out of the tunnel 'clogging' - Wrong! One should simply uncover a tunnel just 'somewhere in the middle' such an extent that the movable part to the 'tunnel floor' ranges. The 'discovery' should not be too big, just really a round hole to the 'Vole corridor'! I'm building me then all around a framework of bricks to fix. A bit loose soil then throw in the hole. Advantage: it works in both directions'. Important: tunnel in both directions 'push' from the case of a bit! Very, very important: safety mechanism (the red wire) only remove when it's all finished and the device is not touched! Important: cartridge with a pliers to tighten, they should have no room!
