Ozone water is an excellent cleaning agent. I am new to the ozone water system. However, besides using it for laundry. I do occasionally use for cleaning, I say occasionally Because sometimes I forget I have ozone water 😅 I remember once I clean my window aluminum frame with detergent and bleach, after all that I have done cleaning, the window frame was not at all look clean, there were still old stained and dirt, please note this, it’s a 30 years old window. Then I remembered I have ozone water which was recommended to me as a powerful cleaning agent. So one day, I decided to use ozone water to clean my aluminum window frame with soap and the same tools I used before in my earlier cleaning, and it works wonders. The Ugly stubborn stained most were gone and remain a less visible one. I was totally satisfied