I make 10 gallons of worm compost every month. I know their whole life cycle. Rain can make them leave the worm bin. Heat can dry them up or they can freeze in winter. Feed them greens mostly, coffee grounds and eggshells are ok, strawberries are good. Nothing acidic -- no onions, no citrus. People ask, “Heh, can I use your worms for fishing?” I’ll say, “Go get a cup of water, dig a hole, pour it in. You’ll get an earthworm for your bait. These are red wrigglers. They make compost.”