Traps + locks up to 3x more (vs feather duster) dust and allergens (Common inanimate allergens from cat and dog dander & dust mite matter). Questions? 1-800-214-8734; www.swiffer.com. Good Housekeeping: Since 1909. Limited warranty to consumers. Replacement or refund if defective. 360 degrees of specially coated fibers grab onto dust & don't let go! Visit swiffer.com. www.pg.com. Dusters assembled in Canada.