I had the pleasure of reading an article about a technique used to collect worms.
This technique I read about is called "grunting for worms".
The way it works is you drive a wooden stake into the ground and take a piece of iron, like an iron rod and rapidly rub it against the wooden stake. This produces a sound similar to that of a mole grunting,as it hunts for worms and the worms wriggles to the surface, trying to get away.
For those of you that like to use worms to fish, I think this article is worth reading. Just go to Google.com and type in "grunting for worms". I found it to be very interesting.
have a great summer