Narwal Robot Vacuum and Mop Narwal is a relative newcomer in the robotic vacuum market. It offers a sweeping/mopping hybrid that's quite impressive. It's expensive and hindered by a slow, clunky learning-curve app. To mop, you drop a sheet of detergent into the base station's water tank that is clean. https://robot-vacuum-and-mop12417.blogrenanda.com/33561366/how-adding-a-best-rated-robot-vacuum-to-your-life-s-journey-will-make-the-difference