Terri, just get a bag of dry, cheap dog or cat food. I find that fish works best, because it has more odor. Sprinkle it behind the pan if you have a solid one and over it, if you have a wire pan. The coons have to work for the pellets and get caught as they fall through the wire to the ground.
If this gets rained on, no problem, as it dissolves and still smells like food. When you catch a coon in the trap, they will tear up everything, but carefully shoot them in the head in the trap, as they bleed like stuck hogs, which in turn, you have now created a massive coon lure, in their scent is in the trap, the blood is there, and you have bait. Honestly for summer trapping, around gardens in good locations, once I bait a trap, I never rebait, as the scent of other animals like possum, skunk, woodchucks lingers when you catch then and they all keep coming to that hot scent spot. Just having natural lure like that helps in keeping cats out of the trap once they get educated.
And as a caution, kill those animals and do not dump them off on someone else, who will have their house torn apart, as you would not like that happening, and chances are someone did just that to you. Plus, it is like these foreigners being dumped in mass into America, they spread disease and they take up resources that are the residents. Meaning, the area people drop animals off, already has enough coons in it, killing everything they can get their paws on.
I would though get another cage trap, and set them together as you have too many coons, and catching one will draw others to the other trap.