Sometimes oats In the US get white and powdery or are only slighty powdery. Obviously the insects are not even visable with a jewelers loup….is this a concern? Or only when its progressed to issues of clumping and webbing.
According to R’ M. Vaye shlit”a it is only when there are bugs, or webbing in the package, but not just a little powder. Please see the following link https://dinonline.org/Bedikat/oatmeal-rolled-oats-quick-oats/