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A mixture of four parts alcohol, one part household liquid detergent
and five parts water is the best solution for cleaning bug residue,
road oils and other materials deposited on vehicle windshields - at
least - that is what we like to use.
Paper towels are by far the best implement to use with this mixture.
The organic residue found on windshields consists of insect skeletons
and fluids, grease, oil, rubber and asphalt, along with minerals such
as quartz, mica, clay feldspar, kaolinite and calcite.
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