It is always nice when our chameleons do eat crickets with no hesitation, for all the convenience reasons mentioned. Unfortunately, while it is not the norm, it is also not uncommon to see a chameleon, and more often its the male of the species, become hooked on eating a certain type of bug, or refuse a specific type. A chameleon that otherwise had been a good cricket eater may one day decide it will no longer eat crickets, while ravishing other bugs. I have seen this in many chameleons, and in many cases, they do not return to being cricket eaters. It is very possible for a chameleon that had been a cricket eater, to then refuse them, to the point of death if other types of insects are not offered. And in some cases, they will switch back. You may have some luck presenting a white, just molted cricket, or I think as mentioned earlier, a dusted cricket, as color does matter. Mealworms and superworms are easy enough to gutload, and readily available as possible alternatives. Hope things work out. Jim at The Chameleon Company