I have seen a lot of old refregs and frezzers on there sides,
Full of dirt people just fill them up with rich dirt and put in a few boxs
Of worms they bought and in a few months they have free worms.

My grand father used to bury large wash tubs with the rim
Just at the surface holes punched in the bottom to drain ( Not to drown the worms )

And it worked pretty good.

Or just throw a few boxes in a wet moist spot in your yard,
And they will reproduce really fast.

And they will come back each year.

What ever you do

Good Luck With It