Auto Duster

["Radley, Jack" <JackR@SHRIVERCO.COM>]

I bought an auto duster from one of the big 3 some time ago - can't remember
which one.  Does anyone use these things.  The one I have leaves an oily
residue on the car.  I assume the oily substance is what the yarn is treated
with to make it pick up the dust.  What am I missing with this thing?  Am I
trading oily streaks for the dust?  There must be a trick that I haven't
figured out.