They're tough little guys.
I've had them live for days with a pin through them
or still be "fresh" after their heads are crushed (and moving!).
superworms aren't very friendly and they're survivors.
I had them a 10,000 count bag set on a bookshelf after a show
they ate through that fabric bag no problem and ran wild.
beware... they ate up parts of my book collection bookshelf and chewed pencils
right down to the graphite core.
I have no doubt that they could cause quite a bit of irritation to any cham
that swallowed a whole one by the time it's jaws got "soft" from digestion.
Since they're so cheap, I make sure they're damaged a bit before
being presented.
No sense to risk ANYTHING to a prized animal over something costing less than a penny.