The Dreame L40S Ultra AE is being returned after falling twice. The user dislikes how dependent it is on no-go zones, especially after using a j7 that handled their layout more intelligently. They’re now searching for robot vacuum options with improved stability and hands-off navigation. https://www.reddit.com/r/RobotVacuums/comments/1omwz0o/dreame_fell_down_the_stairs_again/