Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the market for robot vacuums. It offers a sweeping/mopping hybrid that's quite impressive. It's costly and is hindered by a clunky, steeply learning curve application. To mop, you drop an ointment sheet into the base station's clean water tank. https://bestratedrobotvacuum91982.designertoblog.com/59166863/the-best-best-rated-robot-vacuum-experts-are-doing-three-things