On Mon, 12 Mar 2012 16:46:13 -0400, "Robert Green"
wrote:

The bait has to
be hard enough to remove that they're sure to stand on the trap and activate
the trigger.

Exactly. Use sewing thread and wrap it around cheese, tying the food
down. They really do want to work for the food, but then hang around
too long for a snapped neck.