simplified.....

Night Crawlers make excellent "treats" when building trust, or other forms of "rewards" rather than stuffing your animal full of mice over and over.

A couple of mice / chicks or other large items are great when FEEDING.

But when you want to entice them up out of the burrows, dangle a worm in front of them, works wonders.

Not sure why you would ignore nutritional analysis, because too many people out there feed CRAP to their monitors. (Cat food, dog food, "monitor bites" Etc...)

Bottom line, worms are good food. and at the risk of redundancy, Boscs have a taste for them that's undeniable.
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Regards,
Wayne A. Harvey
Thamnophis US
Savannah Monitors
Snakes and Lizards, It don't get any better....