Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the market for robot vacuums. It offers a sweeping/mopping hybrid that's pretty impressive. It's expensive and hampered by a cumbersome, slow learning curve application. To mop, you place a sheet of detergent into the base station's clean water tank. https://robots-that-vacuum-and-mo78108.boyblogguide.com/27285168/20-best-rated-robot-vacuum-websites-taking-the-internet-by-storm