Since I live in a condo, my composting is on a small level. I use a big black plastic pot that a tree came in once upon a time. There are drain holes in the bottom, and I keep the pot in my rose bed. Wrigglers find there way into the pot through the drain holes, and often when I turn my compost I will find a group of new baby/half grown wrigglers. Since I started doing this, many years ago, my earthworm population has increased significantly in my rose bed, along with the soil. And my compost is very nice. I am moving my compost pot to a different bed this summer - one with poor soil - I hope to get the same good results.