Recently read somewhere, that mealworms eat anything and everything, surviving if the conditions are right. I've raised mealworms several times; sold several "farms" and dumped a couple in the coop/run when I got bored with them. When I read that article it concerned me ... Do they eat wood?
Started a smaller colony, in the past I'd feed the hens with a chopstick or a plastic dish. The other day I dumped a few in their enclosure, they went at for hours. Hope they got them all, it's warm & humid here but we do get alot of rain so may have been lucky in the past. From now on will use their feeding dish, it's plastic and hopefully none escape.