my worms love living in harvested vermicompost
I have a mesh metal basket in the corner of my bin holding sifted, harvested VC. That way, it stays moist until I have enough to use.
There are always several worms in there instead of the feeding parts of the bin. From granddaddy size to teens -- not just freshly hatched babies like you might expect.
I guess some worms prefer that to apples, cukes and grapes!