Don't know if this works or not. One of you fishermen give it a shot...
Calling All Worms! This surprisingly simple technique will unearth some surprising results! Find an area of loose, slightly moist soil (the dirt under a log or landscape timber works well) and push a 12- to 18-inch-long stick two to three inches into the ground. Vigorously rub another stick from side to side against it for about 2 minutes and watch as any worms in the vicinity wriggle to the surface. Try several areas in the yard to see which ones are the hottest worm hangouts.
We had 100 acres with a good sized pond in the middle of it. Friends and neighbors who fished there would sometimes run out of bait. Then you'd see them out in the pastures looking under cow patties for worms.
You might look there first.