Narwal Robot Vacuum and Mop A relative newcomer to the world of robot vacuums, Narwal offers a sweeping and mopping system that's impressive. It's costly and is hindered by a cumbersome, slow learning-curve app. To mop, you place an ointment sheet into the base station's water tank that is clean. https://vacuummopcleanerrobot64655.thekatyblog.com/27149760/10-things-everyone-gets-wrong-about-eufy-robot-vacuum