I tried to use this today for the first time and it is already in the garbage. I was unable to get  the metal shaft to stay seated in the mop head. No matter how hard I pushed it in, it would come loose within 10 seconds, typically when I was trying to rotate the mop head. I kept pushing it back in and it kept coming loose. Additionally, when I would pull on the trigger to spray more cleaner, the entire shaft would unseat from the mop head. After mopping less than 10 square feet, I threw it away and will look for something else. I had one of the original mops that lasted me at least 8 years. This premium version seems like a great idea. That said, unless I just got a bad version, the design is ineffective.