With the cool temperatures and a soaking rain lasting several days, the night crawlers will be out. Put on your raingear, get a tall pail and a flashlight. Walk real softly. There should be a ton out tonight. When it warms up, you can't find them because they dive down deep to excape the heat. After the grass grows in often it gets too thick to pull them out of the lawn. Prime collecting will be over in a week or two. Get out tonight. Fresh or frozen, whole or chopped, your fish will love them. I predict you'll want a headlamp or a light you can hold in your teeth because you'll need both hands. If there are none in your yard, go to a local park. Look for someplace that doesn't use lawn chemicals. During the day you can scout out good places to come back to if you look for the castings they leave behind when they come out of the ground. They look like little piles of fine mud left next to their hole.
I usually collect several hundred and keep them alive in worm bedding for Spring fishing down on the river. At a bait store they are almost $3 a dozen. When I get tired of maintaining the crawlers, I chop 'em up feed them to the fish.
Get out and try it. It's prime time and will be over soon!