Works great. Finally solved the problem.

Several weeks ago I tried the pests with cheaper versions (Bavarian mousetrap, gas, ultrasound) and had to get rid of almost resigned to get the problem with voles under control.
The problem was that the animals falling Always full of dirt pushed and then not triggered properly. The Ultra Fast bugged sometime just me and my neighbors, but not the hustler.
On the recommendation of a friend out, then I have gained me this set. After two days, I can say that that machine has already paid off. In the evening set the Kieferle and morning controlled. Both days she had at night triggered and the rodents finished off. Great. The advantage is that the device also acts as the mouse or the mole (the acquaintances had in the garden) pushes the earth before him.
I would recommend this device so highly recommend as finally working solution.