Review on KKUYI Cordless Electric Spin Scrubber - Upgraded Power Brush for Tub, Tile, and Floor Cleaning - Superior 360 Power Cleaner with 3 Interchangeable Brush Heads and 1 Extension Arm - Perfect for Kitchen, Bathroom (White) by Ayush Bonuccelli

We used them to clean the tiled floor in the kitchen. It worked almost fine. I would prefer: 1. Flat floor brush.2. A full charge is not even enough for one floor.3. There is no spare brush to swap out. Do you supply replacement brushes?4. USB charging is good in terms of safety, but USB charging takes too long and the performance is not enough. I don't know how long it will last, but overall it's not that bad.