Sort through the contents of your refrigerator at least once a week. If the expiration date has passed or you think an item may be spoiled, throw it out. Scrub down the inside of your refrigerator including shelves and drawers using a clean sponge and warm, soapy water. Rinse with clean water and then dry with paper towels or a clean cloth. Avoid using cleaners that may pass on unpleasant tastes to food or cause damage to surfaces. Get rid of odors between cleanings by placing an opened box of baking soda in the back of the fridge. Change the box every three months. Wipe up spills right away, especially juices from raw meat. Defrost meat on the bottom shelf in a covered container to reduce the chance of juices contaminating other foods.Keep the front grill free of dust, which allows airflow to the condenser for more efficient cooling.Clean the condenser coils with a brush or vacuum, unplugging the refrigerator first.