Let me see if I can find the information I was looking at for you. They may be a better choice than waxworms, but based off what I'd looked into, I wouldn't use them as regular feeders. Of course, I could easily be wrong. As soon as I find that information, I'll post it. If it's incorrect, I'd definitely like to know.
Edit: Here's *a* link -
http://hubpages.com/hub/Butterworms
I had found a site that had a great deal of information on feeder insects and how amounts of things like fat and such effect the reptilian body, but I'm having trouble finding it again. I stumbled across it one day when I wasn't really looking, and so it may take me awhile to find it again.
I do remember that it said that regular feeding of butterworms over time will cause an imbalance of calcium in their system. I suppose, however, that if you know the levels your animal needs and you can adjust for the normal supplements you give them, they wouldn't do too badly. They're still high in fat and calories, though. Personally, I'd probably keep them as a treat, but that's just me.
