Calci worms have been on the market a little while now. They are dry maggots of a fly.
They are quite expensive.
Oh by the way, I was willpar before they changed the site, but could not get on after. Still have problems now logging in. I have to change my password all the time. So now I just look at the forums To post a message takes forever and a day. Not impressed, so probably wont contribute much.