You can build a cricket keeper out of almost anything. I use large 60 - 80 qt tubs, with holes cut in the top covered in screens. Cricket food across the bottom, a couple pf pieces of egg crate, & either some of the water crystals or a damp sponge. To clean, tilt the whole tub and shake everything loose to one side. Slide the egg crate to the other side, and put in a bright place so the crickets go to hide in the egg crate. Then sweep/vacuum out.
Almost all of the worms have an adult stage. Mealworms and superworms turn into beetles. The superworms won't pupate unless they are by themselves though. The companies that ship the butterworms out of Chile sterilize them so they can't spin a cocoon, and it seem that the phoenix worm people do the same, but I have seen it happen from time to time.
