How do I attract a ton of worms to the top of the ground? I tried soaking everywhere and waited until nightime but they still...

I tried soaking everywhere and waited until nightime but they still did not come out. Does it hold to be pitch black outside before they come out or close to pitch black?
Answers:    a thumpin sub woofer on the ground immitates rainfall and uusually brings the fishin buddies to the surface for comfortable collection
Soak ground some more. Worms will eventually surface if your area have them. The basic angle worms will surface contained by the daytime if ground is saturated. Now, nightcrawlers will keep on until it is dark to surface and will disappear in a flash if light shines on them or their is foot traffic vibrations.