[header] How to reduce food spoilage [title] Use thermometers in your refrigerator and freezer. [step] To prevent bacteria from growing on your food, set your freezer to 0 degrees fahrenheit (- 18 degrees celsius). Your refrigerator should be no warmer than 38 degrees fahrenheit (3 degrees celsius). 
Since most refrigerators and freezers don't include an accurate way to adjust temperature, you need to put thermometers in your freezer and refrigerator. [substeps] Try to be in the habit of checking the temperature inside the refrigerator and freezer every day.