Originally Posted by
Mooseman
If you are having the traps go off and no possum you possibly are setting to far from tree, I set a hand width from the trunk, another possible cause could be not having the trap stable and the possum stands on the edge of the trap and it tilts and goes off. It pays to use your hammer and dig a little out and place trap so it sits nice and stable, also I set the trap with the dog closest to the tree. There is a chance that when the trap is sprung the Dog ( bit that holds jaws open and is set on plate) could hit the possums foot and throw it away from the jaws, not often but can happen.
An unstable trap is more likely to be the problem of sprung traps and no possum.