Narwal Robot Vacuum and Mop Narwal is a relative newcomer in the robotic vacuum market. It's a sweeper/mopping hybrid that is pretty impressive. It's expensive and hindered by a slow, clunky learning curve application. Drop a sheet of soap into the clean water tank at the base station to mop. https://bestrobotvacuumforhardwoo50187.techionblog.com/27726128/why-best-rated-robot-vacuum-could-be-your-next-big-obsession