Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the market for robot vacuums. It's a sweeper/mopping hybrid that is pretty impressive. It's expensive and hampered by a clunky, steeply learning-curve application. Drop a sheet of soap into the clean water tank at the base station to clean. https://robot-vacuum-cleaner-blac57880.activosblog.com/27241076/what-to-do-to-determine-if-you-re-ready-to-go-after-eufy-robot-vacuum