On the first day they began - in the courtyard of an apartment building - the first little rat, after three days, it was then already six of them in one day (also great beasts). The mechanism is very reliable; only slight criticism is that in the event itself actually can not kill the rats. Either one can so walk in the open field or considered another container in which one leaves them behind, to then handle it short and sweet. Since then so little knowledge and coolness is in demand.
The pure live catch but works just fine, and I have the same three pieces ordered, hence the basement areas are well stocked ...