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      06-18-2012, 02:51 AM   #32
rich1068
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United Kingdom
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Drives: F30 330d M Sport
Join Date: Oct 2010
Location: UK

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Not sure if this helps but my dad has a block paved driveway and he's kept it moss and weed free for years by brushing rock salt over it a couple of times a year. I assume i dissolves when it rains and stops stuff growing.