The device includes a substantially cylindrical oblong rigid extension member having a distal end upon which is formed an articulatable jaw structure, and an opposite proximal end including a hand-operable trigger for actuating the jaw structure between open and closed positions. A collector sock made from a pliable sheet material can be mounted upon the jaw structure so that the sock enwraps the entire fan blade. The inner surface of the sock surrounding its open end includes a plush surface which can conform to uneven or embossed surfaces on the fan blades so that the sock scrapes off and captures dust and other debris from the fan blade.