Years in, but point of confusion here.
I've had worms for years; they do well. The first time I harvested castings, I spread them out to dry in the sun (ball shapes). They did, and were harder than rocks. I tried smashing them with a hammer, then a chisel and hammer - no go. Not even a piece came off! I ended up mixing it with the vegetable bin compost. After that, I would just take some out by the cup to sprinkle around plants. Last time, I took about a quart, and put it in a jar with a lid. It stayed moist for months, and I'd even find live worms whenever I took some out to use. How do they get those dry, fluffy bags of castings that are sold?!? I can't let them dry out again; that was ludicrous - hard as diamonds. What am I missing here? (I've been too lazy to try screening; lots of other stuff going on.)