Narwal Robot Vacuum and Mop Narwal is a relative newcomer to the market for robot vacuums. It's a sweeping/mopping hybrid that's quite impressive. However, it's expensive and hobbled by a clunky app with a steep learning curve. To mop, you place a detergent sheet into the base station's clean water https://cleaning-robot-mop-and-va14986.full-design.com/ten-ways-to-build-your-best-rated-robot-vacuum-empire-70539407