Just wondering if I should be concerned or throw out the chicken scratch. Its filled with small mites. The chickens don't seem to mind and don't seem to have any issues with mites. They have a dustbath with sand and DE.
If your food is filled with mites than your chickens are too. Yes I would absolutely throw out that scratch and spray your coop down with permethrin... you may not notice them during the day bc they hide in chicken feathers.