A control method of the present disclosure causes a computer of an information apparatus to: display a display screen representing a floor plan including at least two or more rooms; display each device icon representing each of one or more target devices on the display screen, the one or more target devices including a specific target device that stores a set content when power has been previously turned off, the device icon representing the specific target device being used in common in one or more rooms; and when selection of the device icon representing the specific target device is sensed and selection of any region in a first room is sensed after the selection of the device icon representing the specific target device is sensed, output a first on-off control command for controlling an on-off state of power of the specific target device corresponding to the first room.