dried out

For the past few weeks, every time I open the worm bin, I find massed groups of worms just under the bin lid, on the rim. I thought they were seeking more food? I hadn't fed as much this past month, hoping they would consume more of the cardboard bedding (the bin was kind of full). I fed more often, that didn't help much. This week there were a ton of worms at the top.

They all look fine, though.

No bad smells, no sign of mites. So I dug down into the bin. It was really dry. I started sprinkling in handfuls of water every time I fed them (about twice a week) and now things are better. The worms stay down where they are supposed to.