On the dog proofs, I like to spear a marshmellow onto the trigger and then add some canned mackeral, sardines, fish oil or vanilla extract on top or it. This will catch coons and possums. I have 6-8' of chain on mine that I chain to a tree or log with a quick link. You can also use cable by attaching one end to the trap and crimping a loop big enough to run the trap through on the other end. Put it around the tree, run the trap through the loop and cinch it down. Beware that it is addicting, it will start with coons and then you will want some coilsprings to go after yotes and cats.