Narwal Robot Vacuum and Mop A relative newcomer to the world of robot vacuums, Narwal offers a sweeping and mopping combination that's impressive. It's costly and is hindered by a slow, clunky learning-curve app. To mop, you drop an ointment sheet into the base station's water tank that is clean. https://goodrobotvacuum98634.pointblog.net/best-rated-robot-vacuum-tips-from-the-top-in-the-industry-68861244