Myself would not feed them mealworms. Since both of those species are burrowers; would offer small earthworms (sized same as frog's SVL or smaller); and insects smaller than distance between frog's eyes .
That's the problem. The only available feeder at the moment are mealies or crickets. I doubt my sister would even come near an earthworm lol. How long do you think it would take for them to safely skip a meal?