Okay I've raised mealworms before but, never really took it seriously. It was a bit of an experiment. I eventually released the beetles. After a fishing trip I had some giants left over and I decided to try again. So I mixed a blend of bedding/food and bought some regular mealworms and put them in. And I figured to let my giants in and let them have some room and eat up and die peacefully. I heard from many people that giant mealworms won't pupate into beetles. However I started getting giant size pupa with the smaller ones. And just today I started noticing giant beetles. They are twice or even three times the size of the smaller ones. So I stirred the bedding to see most of the worms are the size of the giant mealworms. Very few small mealworms were in there and there is a lot more giants in there than I tossed in. I'm not sure why they are all getting jumbo size. ANd the beetles are kept in a different container.