Write an article based on this summary:

Keep your refrigerator set at 37 to 40F (3 to 4C) and your freezer at 0F (18C). Melt away ice crystals with hot water and a cleaning cloth. Use a bristle brush or kitchen utensil to dislodge tougher ice crystals.
Adjust the dials inside your appliance so that each section stays consistently at these temperatures. This way, your food will be stored safely and you won't encourage any excess ice buildup in your refrigerator. Avoid setting your fridge to any colder settings as you might encourage frost. Use an appliance thermometer to check the temperatures inside your fridge and freezer. Saturate a cleaning cloth or sponge with hot water. Hold the damp cloth directly on top of any ice buildup or frost. Press down on it gently to warm up the ice below. If the cloth starts to get cold, soak it in some more hot water and reapply it to the frost. Continue this process until the frost melts away completely. Use a paper towel or a dry cleaning cloth to soak up any moisture before you close your fridge. If you're having trouble getting ice patches to melt away with hot water, use a brush with medium or stiff bristles to scrape away the solid chunks of ice. Or, try knocking the pieces of frost off with a sturdy wooden spoon. Once you've dislodged the frost, sweep up the fallen ice crystals into a bowl and tip them into the kitchen sink where they can melt. Avoid using a sharp object to chip away at the frozen buildup; you may risk damaging the inside of your refrigerator.