Dowsing rods have been proven to be effective for Feng Shui practices since the mid-thirteenth century. These rods help you detect the underlying energy fields and figure out the right direction for the positive Qi energy. The energy fields beneath the surface of the earth can have stagnant or negative energy. Such energy fields can disrupt the flow of positive Qi energy around your house, office, gardens, etc. Dowsing rods help to detect these fields through signals and eliminate them so that the area is free of any harmful energy field.