You might consider leg hold traps, if there are no dogs or kids which can get in them. I’d guess a number 2 leg hold would be about the right size.
Leg hold traps will trap coons, which are one of the smartest animals out there.
Here is the best way to prepare a coon set.
-Drive a T-post deep in the ground to the top of the foot plate on the T-post.
-Dig a shallow flat bottomed hole which is just about the right size for the trap you are using, when the trap is open and set. The hole should only be about a couple inches deep.
-Affix the trap to the T-post using the chain provided with the trap, or a strong piece of wire.
-Set the trap.
-Place the trap in the shallow hole you’ve dug. When set in the hole, the top portions of the trap should be about level with the ground.
-Place a sheet of wax paper over the trap.
-Take some finely ground dirt you removed from the hole and place it on the wax paper, so the trap set just looks like bare dirt. Do this carefully so as not to set off the trap. You can also scatter some pulled weeds and fine debris so the trap set looks more natural.
-Finally, carefully set your bait on top of the trap. It’s not a bad idea to use long pliers to set the bait on the trap, or a couple long sticks, in case the trap accidentally springs. Supposedly porcupines like salted apple slices.
-You’ll want to check your trap every morning if you are trapping a nocturnal creature.
-If you want to be certain to catch the creature, you can do two traps per set (close together) but it’s generally not necessary.
Minnesota Trapline has a full line of traps. Before setting a leghold trap, make sure you watch some youtube videos of experienced trappers demonstrating how to set the traps. You set the trap from reaching underneath the trap, so it won’t snap on your fingers accidentally.