I was Amazed, from the first spray on the stovetop to the cleanliness of my convection oven, my stone tops are no longer streaking and the windows/mirrors I can see out of properly with No Streaks. The microfibre cloths are great and the refill with a hint of lemon scent is so fresh and clean. Did need to test the oven tray in an inconspicuous spot and when I did and used the scourer block it did rub off, so I do know now not to use the product and scourer on certain metals. Otherwise skeptical at first being the clean freak that I am but I am now a believer. Well Done Koh