This mousetrap has a very strong tension spring, which kills the mouse at least on the spot. I have been three mice within two days caught it. In the previously used by me wood falling from building and supermarket mice were caught (even with perfect blow to the neck), but not more frequently killed. The final blow one must then miss even itself. So long suffering receive any Animal Welfare Act. The problem with many wooden models is too weak spring, best try it yourself. Moreover, the wooden case, after the faulty catch often not be used because they will be damaged by the impact and is so polluted that it falls for no more mouse. Soo cheap is in the long run either. This event sold here is simply washed away. A live trap is for me not considered as a releasing of the animal and a death amounts to in unfamiliar surroundings in installments. When using make absolutely sure that the bait does not protrude out of the pot, so that the mouse's head really has to bring in the right position. As bait I use with great success nut cream. Is not fun, but it must be.