I feed my spiderlings on live mealworms & get lots of those beetles. They are no good as food though, as they excrete a noxious gas, if anything tries to eat them.
When I feed live mealworms, or even cockroaches, I behead them, so they continue to move, but cannot bury themselves & then pop up weeks later.
I keep thus breed, cockroaches for food & I also have a few species of Isopod, (woodlice) to act as a clean up crew in my tarantula enclosures, as ispods eat dead crickets, roaches etc.
Good grief! I go and have a happy teatime, and come wandering back to see what the new posts are, and there’s @Gee3 beheading things and using woodlice to clean up…seriously, I am not going to sleep tonight