I have been trying to get the last worm bin task for weeks now. In fact, others want worms and are waiting on me. The bin was now too heavy to tote in and out every time I think of digging in, so it sat in the backyard waiting until I could harvest the last of the worm castings. Then the big rain came. I had thought of this scenario, and while my bin's lid has some small holes in the lid for ventilation, the tarp I kept over the works should keep the rain out. Well, not so. When I opened up to finish the belated harvest with my daughter's help, the worms were in the top of the bedding trying to find some air with puddles encroaching all around. The whole bin was sogged out, the bedding had the consistency of a too-thick brownie batter.
What to do? The bottom-side spigot was already open. The bin's bedding had so much water holding capacity that tipping to pour off water only dislodge the whole mess. The bin contained too much dense mass to even consider that evaporation could dry it out.
I needed to add something that would absorb excess moisture. Since we augment our gas furnace with a wood pellet stove, the pellets themselves jumped into mind. These pressured bits of sawdust are handy when cleaning spills and turns out they can sop up a soggy worm bin too. I added them slowly and carefully incorporating as I went. Laverme's Worms warns of using sawdust in vermicomposting because they can dry out the bedding too much. In the end, the pellets turned out to be a save and my original bin is now three.