Narwal Robot Vacuum and Mop A relative newcomer to the robot vacuum space, Narwal offers a sweeping and mopping hybrid that's pretty impressive. It's also costly and hampered by a cumbersome application with a steep learning curve. To mop, drop a detergent sheet into the base station's clean water tank. https://robots-that-vacuum-and-mo52635.blogitright.com/27788928/the-most-popular-best-rated-robot-vacuum-gurus-are-doing-three-things