Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the market for robot vacuums. It's a sweeper/mopping hybrid that is pretty impressive. It's costly and is hindered by a cumbersome, slow learning curve application. To mop, you drop a sheet of detergent into the base station's water tank https://vacuum-mop-robot-cleaner61506.jts-blog.com/27233933/best-rated-robot-vacuum-tools-to-help-you-manage-your-life-everyday