Only the stems and leaves of the Tomato plant are toxic. Try feeding the actual tomatos if you want a 'natural' food for your worms. However:
Hornworm Chow = Silkworm Chow
It's the same thing at all of the big bug suppliers.
Oh, my, god. Becky, look at her cham. It is so small. She looks like, one of those herp guys' girlfriends. But, y'know, who understands those herp guys anyways? They only talk to her, because, she looks good in khaki's, 'kay? I mean, her cham, is just so small. I can't believe it's just so ungrateful, it's like, out there, I mean - gross. Look! She's just so ... AWESOME! (And modest)