Plus: Thanks to this and the Advance Pro team backpack, the building cleaning time has been reduced by about 30%. Straight side-to-side movements are better suited to our physical body than traditional forward and backward bends. The extremely low profile makes it easy to maneuver around chairs, tables and similar obstacles. Cons: For this to work, the suction head needs to stay flush with the floor. It takes practice. You won't understand right away. This lasts for several days and helps when…