I was raising silkworms, white, zebra, and tigers and they were interesting also. Felt bad when I had to feed them to the mantids but that was why we started the eggs.
Had a problem when the county sprayed for mosquitoes and I didn't know till I picked the mulberry leaves and the worms got poisoned. I saved the worms that didn't eat but didn't sell them again as I didn't want to pass on any poison.
I may do them again in the Spring.
Never feed silkworms to the mantids in the last stage. It was like feeding super glue....they were stuck to the floor at the elbows.