As my frogs both feed from my hand, I decided that the best approach re. calcium powder would be to handfeed a dusted mealworm to each frog (white's tree frogs) a couple of times a week. In the box of mealworms I have, I noticed that a few of them are white and softer looking. Am I right in thinking that they are mealworms shedding their exo skeletons, and therefore lower in chitin?