If you are trying to trap armadillos with the Havahart model we use here is a tip. Make sure to check the trigger as it gets older. Ours is 4 years old now and I have seen catch fall off only to find that it need a drop of oil or a tweak now and then.
The damage was getting extra bad and I was wondering why no catch only to find that the trigger was stiff. Testing it with a stick tells the story. You don’ t want a roach to set it off, but neither require an elephant either. Test it and think armadillo. The hinges get stiff and I use a little 30w motor oil and put a drop on the trigger also. I try not to get too messy with the oil so as not to repel my guests. 🙂