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Re: Picking up Cigarette Butts?
I like Craig's idea of using needles. You could make the needles come through a sliding piece of sheet metal. The sheet metal would slide down the needles to clean them of the offending butts 
Or you could use something like the R/C airplane Woodpecker. It consists of a rotating barrel with very small, sharp points of metal. It could roll along the ground and pick up the butts. Than you could devise a way to knock off the butts from the points.
E-mail me and I will send you a picture of the Woodpecker.
Or you could get a bunch of Freshman to pick them up 
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