I acquired some at the San Diego reptile show as a free sample. I fed it to some crickets and it lasted a very long time, surprisingly. The insects seemed to love it. I know Allen Repashy does extensive research on the products he puts out before they are dispersed to the general public. I would use it on a regular basis for my roach colony if they didn't eat so much, I have found it cheaper and more than adequate to make my own dry food mix, provide left over crested gecko diet, as well as fresh fruits and veggies. For someone that just wants to gut load their insects I'd highly recommend it, Allen makes some great stuff!