Sorting cocoons by hand has been the truly only effective way i have found. I have 2 boys who do it an hour or two after harvest (depending on the amount as well).

Then If I have time, will then let the compost set and will bait the new hatched worms before we sell it or use it.

I have tried the water method- Gets the compost wet and then it has to dry. Still need to sort after ward- too much trouble for our situation.

Screens size helps but only gets about 1/3 to 1/2.

So I harvest using 1/8 and 1/4 screens. I get some that makes it past the 1/8 screen into 1/4. The bigger sort is the start of a new bin, the boys then pick out what they can from the harvest. I let it go most of the time figuring I get 60-70% of the cocoons.

We sort about 50-100 pounds a week in the season.