what i do is just make a quick stop at mcdonalds, get a fish sandwhich and place itin the trap, it has worked out very well for me

I just caught 2 coons last week in a live trap using canned cat food with some kind of fish flavor . They seem to like it pretty good and they both were pretty good size.

Anything sweet or smelly. Especially fish scent. Try fish guts, sardines, catfood, peanut butter, sweet corn, etc. And try to camo-flauge the box trap as stated previously. Either in a wood pile, covered with branches, etc.
Good Luck hope you bag a bandit!