Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the robot vacuum market. It's a sweeping/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 tank of clean water at the base station to clean. https://toprobotvacuum16013.blogpixi.com/27943056/what-is-the-reason-eufy-robot-vacuum-is-right-for-you