I did not hear of barefoot spas until I saw a couple ads online and found them doing a show at the fairgrounds. My wife went out there and found exactly what we wanted so we bought one. I was looking for something that did not use as many chemicals as our old spa. My wife and I both had a reaction to the chlorine. This is the best thing about the barefoot spa is it has a UV sterilizer and an ozone generator that oxidizes and sterilizes the water. Very effective and far and away the easiest in terms of maintenance. Very effective and efficient product. I recommend these spas.