Grain mills are plants of critical significance in nutrition, a primary need of billions of people worldwide. Grains, such as wheat, rice, maize, rye, and barley play a fundamental role in ensuring a balanced and healthy diet for people of all ages.   Large grain volumes are processed in many stages at milling plants, which run comprehensive operations. Many factors determine final product quality. However, food safety is among the primary points to be considered at a grain processing plant, which, in turn, inevitably brings to mind the topic of cleaning.   Since it is inconvenient for grains to come in contact with water, most milling plants choose to employ dry cleaning methods. The process from the point of grain receiving until end products are dispatched from the plant features many environments that pose food safety risks. Therefore, staff training is a top priority at mills. Operations run by incompetent personnel include significant occupational and food safety risks. In addition to grain and plant cleaning, processing equipment cleaning is also important for high-quality and safe food production. Regular and effective machine cleaning helps eliminate food safety risks. Ensuring the continuity of production during cleaning procedures is another topic to consider.