Very poor suction. Also it has to be mounted to a wall ...

Very poor suction. Also it has to be mounted to a wall near an outlet for recharging. That means in most small aparatments like mine it can be stored out of sight in a closet. The battery doesn't last long. It starts reducing power after about 15 minutes. . You need to clean the roller brushes after every use if you want it to actually sweep debris up off the floor.