Many shoes have plastic coating or accessories that quickly develop residue and film. The plastic is typically clear and shiny, but normal wear and tear will leave the plastic parts of the shoes looking dull and worn. To clean the plastic parts of the shoes properly, keep a few inexpensive cleaning items on hand, and clean the shoes as needed.
Dip a cleaning rag in white vinegar, and rub over the plastic areas of the shoes.
Dip an old toothbrush into the vinegar, and scrub along crevices or in hard-to-reach areas. The vinegar will dry clear and remove all residue.
Moisten a fresh area of the cleaning rag with plain water, and wipe over the shoes to remove any remaining residue.