No. but you have to set the trap outside of a building. For example, to sever all of huang ming pongs limbs you can place traps in the tile immediately south of his door. Then place more traps in the tile just south of that (2 south of his door). Then drop food over the second set of traps. laugh as he hauls his fat ass out of his hut to get the food. Pick up the food when he is stuck in the first trap. then move NW or NE to stand beside him and laugh. He will then proceed south and get stuck in the second set of traps. In the meantime you can reset the first set of traps so that he will get stuck in them when he drags his legless body back to his hut. If you don't mind being chaotic you can then eat his severed limbs to get bloated and challenge him for the belt of levitation.