Narwal Robot Vacuum and Mop Narwal is a relative newcomer in the robotic vacuum market. It's a sweeper/mopping hybrid that's pretty impressive. It's expensive and hampered by a clunky, steeply learning curve application. Drop a sheet of detergent into the tank of clean water at the base station to clean. https://topratedrobotvacuum72588.bloggazzo.com/27322332/how-to-tell-if-you-re-ready-to-go-after-eufy-robot-vacuum