Crawdad traps on Amazon
More info on catching and cooking crawdads. What you use for bait and how much you use is critical if you are setting a trap and leaving it for a while. Once the trapped crawfish have consumed the bait you've left in the trap, they'll start looking for a way out. Part of the idea is, you want to keep them busy/interested enough that they're still occupied with the bait by the time you come back. Also, the more bait, the stronger the scent and the greater number of crawfish it will likely attract.The best bait is fresh fish carcass. Cat food, hot dogs, lunch meat- all that will work, but simulating what they ideally eat will usually yield the best results.
Also, a giant (5in) species of crayfish was recently discovered in Tennessee. That's bigger than most I see around here, but some of the ones we catch in the Etowah River below Allatoona are almost that large.
The video above is put out by Ozark Mountain Preparedness in northwest Arkansas. Be sure to take a look at their page, especially if you are in that AR, OK, MO area. I've never been to one of their courses, but just based on the topics, I'd sure like to.