Have you ever walked around after a rain storm and notice the pavement is covered with worms? When I was younger I would go out and pick buckets of worms, bad thing I could never get them to last long enough to use them all up and I would go fishing
every day. It would frustrate me and my parents did not like the smell that the rotting worms would produce, (if you've never smelled it, go to your local dump when it is 95 out and take a big huge breath, you'll almost know what it smells like.)
My uncle, who was in his own right a fishing
guru, taught me what he would do to keep worms. He would fish daily and rarely had to buy bait. He had a bath tub buried in the ground he drilled holes in the bottom of the bath tub. He lined the tub bottom with metal window screen
filled it half way to the top with black dirt and he had inescapable worm home. This was so cool I had to find a tub and do the same thing, I never ran out of bait. I just had to patiently wait for the next rain storm.