I don't know how good the food is for them, but they love it. I took a toilet paper roll of dubia out of my colony to get a mix of sizes and put it in with the silkworm food. Before I could get container closed they were already eating the food......I guess I'll know fairly soon.
Maybe if they don't do well on it I could use it for a gutload a day before feeding them off. It's all that the silkies or hornworms eat and they're great feeders for chams, so.....?????
Kevin