Depends, if the gut load is good enough to actually achieve the proper Ca:P ratio and vitamin load after 48 hours of feeding. You might be able to find a study on the internet with results. A problem is that the crickets don't deal with the amount of calcium that's in these diets and they will die after, so you'll need to keep insects that you're not feeding out in another tank and feed them fruit and vegetables as well. Also, there's no idea to tell what insects have actually ate it. Another limitation is that you're only feeding the insects the gut load. If you were to dust you can also feed the insects healthy foods that have natural non-toxic vitamins and then dust with calcium and multivitimins