They really aren't that nutritious. A few companies will try to talk them up, but they not that great of an option. The other concern with mealworms is the high amount of chitin they contain. That can lead to impaction. Dubia roaches are a great feeder though! If you want to try other options, you could try earthworms (NOT red wigglers) cut to size. Otherwise, gut loaded and vitamin dusted crickets are an excellent staple.