Narwal Robot Vacuum and Mop Narwal is a relative newcomer in the market for robot vacuums. It's a sweeping/mopping hybrid that's quite impressive. It's also costly and is hampered by a clunky application with a steep learning curve. To mop, you place a detergent sheet into the base station's water https://toprobotvacuum08193.snack-blog.com/27617610/the-most-popular-best-rated-robot-vacuum-the-gurus-have-been-doing-3-things