Advertisement Hey guys! I'm VERY new at bug-keeping. I've had hissing cockroaches for 2 months, and millipedes for 2 weeks, and that's my only experience, so I apologize if there's a clear answer I'm missing. So, about exactly two weeks ago I got 5 narceus gordanus millipedes. They stay underground all day, but have been very active at night, usually all five of them surface and walk around and eat all night. Good appetites, eating about everything and anything I put in there. But now suddenly for the past two days/nights, they've all been in the exact same spots and not moving. Most of them are buried with a small portion of their back poking out of the ground, but a couple are all the way buried. They're not dead or limp, if I poke one of the visible spots, they flinch and move slightly, but not much. I know that this behavior can suggest molting but all five started doing it at the exact same time, so I have a feeling that's not it. What could be happening to them, and what can I do? Some info on how I've been keeping them: I've been keeping them in a 6qt bin, with about 2-3 inches of "millipede-substrate" bought from BugsInCyberSpace, since I didn't trust myself to figure out how to make my own. I know it should be deeper for them so I've been planning to switch to a larger bin as soon as I find one I like. No added ventilation as the lid is anything but airtight (but if you guys think I should, I can pop a few holes in the lid or something). No extra heating, and my room has mostly been 70-ish degrees, depending on the time of day. I've been feeding them veggies and fruit, mostly romaine lettuce, celery, and apple, along with some dog food. I have a piece of cuttlebone in there too for calcium. I recently noticed some mites or something in the substrate, but not a ton of them, and I haven't seen any attached to the millipedes, although it would be hard to see since the 'pedes are all buried lately. I mist the substrate every couple of days unless it's still pretty moist, then I wait an extra day or two before misting again. Let me know if I should be aware of anything else I need to do to give them better care, or if something is wrong with their current care. Thank you!