Narwal Robot Vacuum and Mop Narwal is an relative newcomer to the market for robot vacuums. It offers a sweeping/mopping hybrid that's pretty impressive. It's expensive and hindered by a slow, clunky learning-curve application. Drop a sheet of detergent into the clean water tank at the base station to mop. https://mop-robot-vacuum48234.vidublog.com/27233517/what-is-the-best-place-to-research-best-rated-robot-vacuum-online