Dephora
Songster
A weevil is a small grain beetle that lays eggs in the heart of the grain and the weevil larva eat the center. This results in the real nutrition of the grain to be eaten, as the core is gone. Chickens can eat weevils no problem, but the real issue is that a badly infested bag will have a much lower nutritional make up, as most the grain will just be hollow shells.What exactly is a weevil? Is it harmful to chickens?
Anyways, powder/dust is completely normal. Scratch should not be fed as their primary food but as a treat. I don't know anything about bugs
Weevils are usually already in the grain before you even open the bag, having laid eggs in the feed/grain in the mill or processing factory, so if the bag sits around unused, you will still find weevils in it even though you have kept the bag sealed and safe. If you add DE to the grain when you get it, this will not hurt the larva already eating the hearts of the grain, but it will kill the adult beetles that emerge.
You may be more familar with weevils in human food, they often can be found in flour that has sat around too long or in old cereal. They aren't just a chicken grain problem.