For a second I thought you said chitluns.
Ain't got no chitlins here. Actually Prince Albert likes them. It doesn't take long for a bag to disappear.
Chitlins = pork rinds? 
Pig guts lining. 
Tastes horrid, smells even worse when cooking.
Eeewwww, the lining of the stomach and/or intestines?
Here's part of an article from a crawfish website:
Baits
Traps must be baited to attract crawfish. Bait accounts for nearly onethird of total production cost. The cost of bait depends on the type used, amount used per trap, trap density, and trapping frequency. The two types of bait used are natural fish baits and formulated baits. Fish baits are usually sold frozen in 80-pound or 100-pound boxes. Clupeid or sardine-like fishes, specifically gizzard shad and Gulf men-haden or “pogy” (Fig. 3), are the most widely used natural baits in Louisiana where there are commercial fisheries for both species. They can be difficult to obtain in commercial quantities in other southern states. Herrings, common carp, suckers, and catfish and buffalofish heads are also used. Shad, menhaden and carp attract crawfish better than other natural fish baits.
Beef pancreas (“beef melt”), commonly used by recreational trappers, is an effective attractant but too expensive for commercial use. There is a story from the 1980's about a major meat company that noticed a lot of beef pancreas was being sold in Southern Louisiana in the spring. They thought we were doing some crazy gastronomic dish with it and wanted to raise the wholesale price. The area grocery stores set them straight.
