Narwal Robot Vacuum and Mop A relative newcomer to the robotic vacuum market, Narwal offers a sweeping and mopping system that's impressive. It's also costly and hobbled by a clunky app with a steep curve. Drop a sheet of detergent into the tank for clean water at the base station https://robotvacuum31153.blogdun.com/28211769/why-best-rated-robot-vacuum-is-harder-than-you-imagine