There's a Right Way to Clean Your Refrigerator
To keep the cold in and bacteria out, the temperature of your refrigerator should be 40 degrees or below, and your freezer should be 0 degrees or below. Not all controls show the temperature, though, and even when they do, the indicator inside isn’t always properly calibrated. Inexpensive freestanding appliance thermometers (one in the fridge, another in the freezer) allow you to monitor settings. Remember that objects stored in the door are subject to gusts of warm air, so tuck meat, seafood, dairy, and eggs in the back. And avoid overcrowding; air needs to circulate around items to keep them cold.