Objective: Dust the lamp shades quickly.

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS: [+] Use a feather duster, which traps the dust and makes it cling. Takes 5 seconds per lampshade. [+] Use a feathered duck, which traps the dust and makes it cling. Takes 5 seconds per lampshade.
Use a feather duster, which traps the dust and makes it cling. Takes 5 seconds per lampshade.