GFCIs can help prevent electrocution. They should be used in any area where water and electricity may come into contact. When a GFCI senses current leakage in an electrical circuit, it assumes a ground fault has occurred. It then interrupts power fast enough to help prevent serious injury from electrical shock. Test GFCIs regularly according to the manufacturer's instructions to make sure they are working properly. Note: watch those refrigerators in the garage. Most likely it’s plugged into a GFI outlet that may trip. A new circuit for the appliance should be installed.