I got some of these from the pet shop as a treat for my chooks (usually bait for fishermen I guess), but they are quite expensive. The girls had grass clippings in their run so I mixed the mealworms in with this so the girls had to hunt for them.
Then I read on an American thread that some people have a really simple system for breeding them - if I've understood this you get a couple of lidded buckets (like lidl yoghurt buckets but pinch air holes in the top) in which you have your regular mealworms for immediate use (1st bucket) but in the 2nd bucket you put some dry chicken food and then the meal worms stay in there longer, eat, grow, turn into beetles(?) and lay larvae which hatch into new meal worms. Maybe they keep subdividing the worms so there's always some developing.
Just wondered if anybody has tried this. I'm possibly too squeamish but if someone else had tried and tested it, may give it a go 
I've been collecting these yoghurt pots for weeks now thinking I'll find a use for them one day 