Bacteria and fungus grow in sweaty shoes, producing bad odor over time if the organisms aren’t held in check. Keeping your Keen sandals from stinking is not difficult, but if you avoid cleaning sweaty sandals, no matter which brand, the odor will return. Cleaning Keen sandals is exceptionally easy--and it doesn’t matter which design of Keen sandal you own. Washing instructions for both the synthetic and leather upper sandals is the same.
Place the sandals on a flat surface. Sprinkle and cover the insoles with baking soda. Leave it overnight, undisturbed.
Shake out the excess baking soda. Place the sandals in your washing machine.
Set the machine to a cold water, gentle cycle. Add just a teaspoon of mild laundry detergent and let the sandals go through a wash and rinse cycle.
Place the sandals in a well-ventilated area, in front of a fan, to air dry. If any odor remains after washing (it shouldn’t), sprinkle baking soda on the insole and leave over night before shaking the sandal to remove excess baking soda.