The temps here in Hilo are so moderate and mild compared to you guys! But still, I did notice that when the weather got colder, a lot of all stages, mealworms, pupae and beetles died. That's the only think I can think of. Everything else stayed the same. I did notice that is seems they are changing from worms to pupae, but during the change from pupae to beetle they were dying. They still kinda are. But, I've moved them into my storeroom, right next to my stand up freezer, where it's warmer (they were in the garage). Now I see more new beetles. Hopefully, that's all it takes. I literally went from 1000's of worms to 100's in a few weeks. Also, I am noticing some weird little moth that is trying to live in the drawers with my worms. OF course, I kill them when I see them. But could these be harmful? They make irritating little web like stuff. AND, a also see a really little black beetle in there. I don't know what it is. It's really small, like just a bit bigger than a flea, and hard shelled. I see them when I'm searching out my pupae and such. I get them out, too, but they may be hiding under the bran and frass. Do you think they could be harmful?