Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the robot vacuum market. It's a sweeper/mopping hybrid that's pretty impressive. But it's also expensive and hobbled by a clunky app with a steep learning curve. To mop, you drop a sheet of detergent into the base station's clean https://robot-vacuum-and-mop01206.blogkoo.com/this-is-the-history-of-eufy-robot-vacuum-in-10-milestones-47282008