Narwal Robot Vacuum and Mop Narwal is an relative newcomer to the robotic vacuum market. It offers a sweeping/mopping hybrid that's quite impressive. It's expensive and hampered by a cumbersome, slow learning-curve app. To mop, you drop a sheet of detergent into the base station's water tank that is clean. https://robot-vacuums28920.aioblogs.com/77746655/the-one-best-rated-robot-vacuum-trick-every-person-should-learn