Narwal Robot Vacuum and Mop A relative newcomer to the world of robot vacuums, Narwal offers a sweeping and mopping hybrid that's pretty impressive. It's costly and is hindered by a clunky, steeply learning-curve app. To mop, you drop a sheet of detergent into the base station's clean water tank. https://top-rated-robot-vacuum81227.bloginder.com/28277481/how-eufy-robot-vacuum-rose-to-become-the-1-trend-on-social-media