Fans are a tried-and-true way to cool a room, and are more cost effective and efficient than running your air conditioner. But to run optimally, they must be clean.Sabrina Fierman Cusin, vice president at New York’s Little Elves, a high-end, full-service cleaning company, notes that all fans—whether floor, table or ceiling—“must be kept dust free” to keep dust from overtaking the room when the fan is on. Fierman Cusin suggests dusting the fan weekly with something dry, soft and nonabrasive like the Pledge® Multi Surface Duster, whose angled handle and all-around grabbing and trapping fibers work easily to navigate between crevices, casings and blades for optimal dust pickup.If your fans have caked-on grime, Fierman Cusin recommends wiping down their surfaces with an all-purpose cleaner.