Can be used dry or moist. Fits onto telescopic handles and reach extension poles. The Shaggy Duster tool grabs all types of dust on all types of surfaces without letting that dust go. With a flexible frame it can bend to any shape and fits on an extension handle for easy high dusting. For curtain rails, inside ceiling vents, on top of or behind book shelves, for services panels, bed frames and window sills the Shaggy can also dust LCD screens on TVs.