I was skeptical about this product. People had told me stories about douzing rods, but I had trouble believing. It seemed sort of like hocus-pocus, but there really is a science behind them.I bought these at the request of my husband when we needed to find water on new property we bought. We invited family out and everyone took turns with the rods. Everyone came up with the same indication of where a vein of water could be found. (Except me). I could not make the rods indicate water because I have some weird electrical makeup that causes me to get shocked easily on shopping carts etc. When I "grounded" myself on my husband before douzing, it temporarily removed the electrical charge or neutralized it so the rods could function.When we had the well driller come out, we told him where he could find water, but he chose to drill in a different spot, based on his "professional opinion". After drilling 40 feet, he did not hit water. He then moved to the spot we indicated at our insistance, and within nine feet, he hit water.