You should dust with a calcium powder designed for dusting crickets. You can dust with CGD to try to get them used to eating CGD, but CGD is the right balance all by itself. Crickets aren't, so you need something that makes up for that balance. That means, something that has more of what the crickets are missing.
*** My "N" key is actig up. Luckily, there's no "N" in "crested gecko" or "Rhacodactylus ciliatus".***
0.1 German Shepherd Dogs
1.1.2 humans (that's 1 adult male, 1 adult female (me), and two male juvies)