If you can get em use em. They can be used year round but are probably most productive in season.Freeze them in cornmeal or sawdust and they will still be as good as fresh. When hooking them its best to atleast rip their head off or turn them inside out.Its the juices that are created from the worm that attract cats. Probably one of the best channel and blue baits around.
catalpa worms a re a great bait. we used to use them freash and frozen. we would put our in a tuperware container and freeze them and then when we used them we would cut little slits in them to let the juices flow. you can catch an array of fish on them, from cats, to blue gill, crappie, bass, you name it.
I usually freeze mine. I put 50 to 75 bigguns in a coffee creamer bottle and fill with enough water to cover the worms and freeze. If you thaw them out slow they look just like they did the day you froz'em. If you let them get hot they turn black,but they will still catch fish.I have used them year round.
Anyone already seeing worms on their trees? I was in the yard yesterday and I have 1" worms on my trees already I do not think I have ever seen them on the trees this early in the year but then again I had them on the trees 4 times last year and that is real unusual I normally get them 2 times a summer.