You can put the wax worms into a tupperware container with bedding (oatmeal works nicely, with some honey mixed into it), and a top with the plastic cut out and screen glued in for ventilation. Also, wad up some balls of wax paper and put inside the container. The waxworms will pupate and then turn into moths which you can use as feeders. I don't think the nutritional value is great, but they burn up quite a bit of fat turning from worms to moths, and flying prey is always a nice change for your chams. The wax worms are good as a treat, very sparingly, maybe to get them used to hand feeding, or as a reward for climbing onto your hand.