Narwal Robot Vacuum and Mop Narwal is an relative newcomer to the market for robot vacuums. It's a sweeping/mopping hybrid that is pretty impressive. It's expensive and hampered by a clunky, steeply learning-curve app. Drop a sheet of soap into the clean water tank at the base station to clean. https://robotvacuum57239.theideasblog.com/28130536/the-best-place-to-research-best-rated-robot-vacuum-online