Keeping your fridge and freezer hygienic is essential for food safety and appliance efficiency. Regularly clean shelves and drawers with mild soap, discard expired items, and store food in sealed containers to prevent contamination and odor. Maintain proper temperatures—around 37°F (3°C) for fridges and 0°F (-18°C) for freezers—and avoid overcrowding to ensure good air circulation. Promptly clean spills and defrost when needed to keep your appliance fresh, efficient, and safe for everyday use.