This mole trap requires you to dig out part of the tunnel to align the jaws of the trap with the mole's tunnel and then you have to carefully cover part of them back up. That is the first type of trap that I bought and I'm sorry to have to say that I have never caught a mole with it yet (watched several YouTubes on how to set it). After using that type of trap for almost two weeks with no results (changed location every day to active tunnels and got really good at setting it), I purchased two of the Victor Plunger Style Mole Traps. The very first day after getting the plunger style traps I caught two moles with the plunger traps and one more mole the second day with the plunger trap (I was still using this Out O'Sight trap but still with no results). You don't dig out the tunnel to set the plunger style and they are easy to set and put into play. But there is one thing that you need to watch out for when using the plunger style trap. I read this in some other reviews and sure enough, it saved me from losing a mole. It is not unusual for only one of the spikes of the plunger trap to barely pierce the mole and not kill them. If you pull up the trap after it has sprung to see what you have caught, you will pull the spike(s) out of the mole and if he is still alive, he will scurry away through his tunnel. So, what you have to do is take a garden trowel, or something similar, and before moving the trap, dig out the area around the spikes to see what is going on. Two of the moles that I have caught were killed by the trap. One mole, however, was still quite alive and was being held by one spike that had just pierced through the skin on one leg.