sadly not for human consumption

I called in RSPB Old Moor today, and stocked up on feeder seed and dried mealworms.  On  opening the mealworm box there is a lovely toasty smell, which made me feel quite peckish.  Unfortunately the instructions on the box say "not for human consumption".  I'm very tempted to try one just to see what it's like.  I wonder if anyone sells mealworms for human consumption?

Ruth