Check the temperature. If the temperature is above 20 degrees Fahrenheit, you can use rock salt. Calcium chloride, which is more expensive, can be used so long as the temperature is above minus 25 degrees Fahrenheit.
Put on a pair of rubber gloves. Calcium chloride and rock salt are both irritants and can cause rashes if they comes in contact with your bare hands.
Scatter handfuls of calcium chloride in the area that you wish to deice. The calcium chloride and rock salt come into contact with the water on the ice to form a brine, which in turn melts the ice.
Wait for between 10 and 20 minutes and check the icy area. Repeat steps 2 and 3 if necessary.