There are many different makes and models of cage trap this easy to set stv076 is a robust spring loaded metal cage trap into which the squirrel enters lured in by food and is ideal for indoor and outdoor use near the back of the cage is a trip pan so when the squirrel steps on the pan it triggers the trap door shut and the animal is trapped inside alive some other traps are made from different materials such as solid walled plastic or other materials stv076 is made from steel bars this stv cage