Super worms aren't really worms although everyone calls them that. They are the larvae of the darkening beetle. I am raising some right now. When you separate the larvae (super worm) into an individual cup and put in a dark place without food, they make a crysalis. This crysalis then grows the beetle after about 3-4 weeks. The beetles mate and lay eggs which hatch into teeny tiny "worms" or larvae. Mine have now increased in size to about an inch. I have read that they grow and shed their skin 6-8 times, almost doubling their size each time. When they get to be about 2" you can gut load them with potatoes, carrots and some leafy greens. I have experimented with them, but mine always prefer oatmeal or wheat germ the best.
I feed my chams 1 at each feeding. They love them and will always choose the super worm over a cricket. However, by giving them only 1 they are hungry enough to still eat their crickets.
Ah --- I think you are referring to silkies or silk worms. I don't use them so don't know anything about them.