I had to serve a warrant on a guy for Theft of Property.
Before I went in search of him, I read the affidavits, etc.
The guy was notorious for sneaking on private land and "fiddling for worms".
He was caught with a five gallon bucket full from one guys property and the guy pressed charges.
I actually went to the issuing judge and asked if it was a joke of some sort.
Nope...real thing.
Long story short, I got a demonstration from the guy.
Never saw anything like it.
He stuck a long wooden rod in the ground and began rubbing back and forth on it with another piece of wood...and worms started literally flowing out of the ground.
Amazing sight to see.
He told me that under the right conditions, he could get two to three 5-gallon buckets full in one night.
Consider that a small Styrofoam container holds about 20-30 worms for 3 to 6 bucks per container...
His meth habit was well fueled.
Until he got caught.
I worked with a guy whose approach was somewhat (but not much!) more technical. He wrapped the stripped ends of a lamp cord around two large screwdrivers, stuck the screwdrivers into the ground and plugged it in.