What are the six key safety tips for refrigeration of foods?

The six key safety tips for refrigeration of foods include: 1) Keep your refrigerator at or below 40°F (4°C) to slow bacterial growth; 2) Store raw meats and seafood on the bottom shelf to prevent drips onto other foods; 3) Use airtight containers to prevent cross-contamination and maintain food quality; 4) Regularly check expiration dates and consume or discard items as needed; 5) Avoid overcrowding to allow for proper air circulation; and 6) Promptly refrigerate leftovers within two hours of cooking to minimize foodborne illness risks.