I was sold (and given) cups of these under the name of cleaner crews. They say they'redermestids and meal worms, but I've never seen a hairy looking bug, or a full-grown meal worm, just beetles and tiny worms. It kept my cricket bin from getting stinky, so when I used up last of crickets a while ago, I transferred cleaner bugs and their larvae into baby roach bin, where I already had a cleaner crew. Lately, as I'm using up roaches, the beetles were outnumbering them, and I bought more crickets and transferred some back to that bin. Put some into roach breeding bin, too, where I also already had a cleaner crew. Earlier today I used up the baby roaches and was aghast at how many little worms were in roach bin. That was just what I could see. In the corner with debris, there were more, and more beetles. I put some, with beetles, into roach breeding bin, and some (including "furniture") into cricket bin), then the rest with remaining debris, I poured into a deli cup, put a lid on it, and placed it inside of the small tote, inside 2 more totes, (almost as if I were afraid of them, but I just don't want any escapees).

What the hell do i have here? Are they worth saving? to me, beetles are beetles, and altho the pics of dermestid beetles I looked up look like what I have, again, beetles just look like beetles to me. Altho some were red a while back. The worms just look like tiny meal worms. The larger ones look darker, but none have ever gotten very big at all, and I've had them for months.

Maybe they are flour beetles? And why don't the mealworms grow?