Maybe would work on silkworm, hornedworm, or superworm. They could probably survive it long enough to still be moving to be eaten. I wouldn't start of with too much, work your way up the dosing. That way you'll know what is TOO much. imagine a crix or roach wouldn't last too long, unless you dehydrated them first, even then sounds iffy. But what do i know, i have never tried it. I am not sure about using the reptaid though, as i have never had to use it. Back in the day when i managed pet stores, i use to taste all the 'vitamin' stuff that came in. Most back then was just colored water, a rip off. Don't know about todays products. I was once paid $100 to eat a new product called pig ears for dogs back in the early 90's, that is commiment to your pets. Good luck with whatever you choose.