i feed my crickets mixed greens, a slice of apple, a slice of potatoe, a carrot for moisture, vitamins, and minerall and for protein, fiber, etc. i feed fish food, crumpled bread, and cereal grains.
dont use dog or cat food because that has chemicals in it that aid with shedding fur and stuff thats not for herps.
i used to feed gutload from the stores but my crickets will eat everything else before eating the gutload and with the gutload i found more crickets died and their poop was unhealthy. i used that nature zone gutload stuff.