These are brand new. You can trap and lock 3x more dust and allergens vs. a feather duster. They can reach deep into nooks and crannies to grab, trap and lock dust. They can be used wherever dust shows up such as fan blades, blinds, car interior, keyboards, vents, bookcases and more. Once trapped, get dust and allergens out of your home once and for all by tossing the duster pad in the trash.