Soft, dry cloths create an electrostatic charge that attracts dust, dirt, common allergens and hair. Acts like a ?dust magnet.? Entangled microfibers trap and hold dirt in place. Throw cloth away and dirt goes with it. Use for hand dusting or with the sweeper head for use on floors or hard-to-reach places above the floor. Safe for wood, ceramic and vinyl tile, electronics and other hard surfaces. Leaves no residue.