Okay, I've seen this a couple of places and let's be very clear. They're not maggots. Maggots do not eat chocolate or peanuts, they eat dead flesh.

These are some variety of cupboard moth worms. They emerged as a virulent pest in the eighties when interstate trucking was deregulated. Truckers no longer fumigate their trucks between hauling various products so the moths live inside the trucks and infest whatever starch-based cargo ends up in there.

While they're destructive, they're harmless.

The true loss is to the store that ends up buying that infested cargo, the larvae will get into all sorts of stuff. They do chew through cellophane overwraps, so things that you think are factory sealed, probably aren't.

Hey Cybele - thanks for giving us the info. If only Nestle would provide an explanation.

I found the same thing to have happened to a Hersheys Symphony bar in the same store several years ago when it was Shoprite. Hershey did provide a prompt explanation, apologized, and replaced (+) the product with free coupons.