Acarus siro is a species of mite commonly found in stored products, particularly grains and seeds. These tiny arthropods are typically less than 1 millimeter in size and are known for their ability to thrive in various environments, including homes and warehouses. They feed on organic materials, such as mold and decomposing plant matter, which can lead to contamination of food supplies. These mites are often associated with food spoilage and can cause allergic reactions in sensitive individuals. Control measures include proper storage of food items, maintaining low humidity levels, and regular cleaning to minimize their presence. Understanding Acarus siro is essential for effective pest management in agricultural and domestic settings.