Before wiping down the bodywork, however, pay attention to the water beads that form on the surface.

FORBES: Zen And The Art Of Keeping Your Car Looking Beautiful

These will be much more effective at filtering contaminated water because the beads will have greater surface area for the arsenic to bind to than the plastic chips.

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If water starts to form elongated beads or a thin sheet on the horizontal panels, it is time to re-wax the car.

FORBES: Zen And The Art Of Keeping Your Car Looking Beautiful