Orange Cautions:
Insecticide is sprayed over orange crops. It is important to at the very least wash the oranges in cold running water before use. Better is to wash them in a fruit and vegetable rinse. Organic oranges do not have these chemicals and are best suited for zest preparation.
For those susceptible to foodborne illness, you may need to avoid drinking unpasteurized or fresh-squeezed juice that could contain bacteria. Try sticking to pasteurized juices.