Ozone is a popular and effective method of sanitation for many pool and spa owners. Ozone eliminates the high expense and irritating effects of heavy chemical use. Say goodbye to itchy, red eyes and skin caused by heavy chemical use. Over time, the use of ozone is also a much cheaper alternative to chlorine. Many customers have reported cutting their chemical reliance by up to 95%. A2Z Ozone makes pool sanitation the way it should be: pure and simple.