There are two basic principles to any trap or snare - appear safe and inviting then once the prey is totally committed the trap springs

When a trap is deployed anything that might make it seem dangerous and threatening is hidden or covered. With animal traps, the mechanism of the trap might be covered with leaves or straw.

The most important part of making the trap inviting is putting out bait that will be hard to resist. A good trapper knows what best attracts the animals he desires to ensnare. The bait is positioned so as to be seen or smelled and appears free for the taking but the only way for the animal to get to the bait is to enter the trap. The bait is presented as though it is free. It looks as though it is left unattended. The allusion is that the bait, that is so desired, can be had without any cost or consequence.

Once the prey is totally committed the trap springs. This is where the second principle of any trap comes into play. An effective trap only springs once the animal is completely committed. The bait is placed deep in the trap so once the trap springs there is no opportunity for the animal to escape. With any trap – when the danger has been recognized the opportunity for escape is no more.

There is one more principle about traps that is important to understand. An animal may willingly enter a trap in hopes to consume the bait but once trapped it loses any autonomy and is at the mercy of the trapper. All traps lead to the loss of freedom and most traps lead to the loss of life.