Marshmallow on the trigger, but i use and alternate between several different lures. Grape or strawberry jelly, fish oil, crayfish oil, also i use a lot of what i call "sweet stuff lure" which is a 20oz bottle with one small bottle of anise 1/4cup or so of honey and fill the bottle the rest of the way with imitation vanilla. This works very well, squirt it on the mallow and squirt a trail to the trap. The sweet lures also help to avoid the skunks that you'll be more likely to catch with the fishy stuff.
