3. Use a Homemade Deodorizing Solution
Combine a tablespoon of cornstarch, 3 tablespoons of baking soda, and 5 drops of tea tree oil.
Sprinkle this homemade deodorizing powder inside your smelly shoes and leave overnight.
The powder works as a potent damp- and odor-absorber, whereas the tea tree oil kills odor-causing bacteria.
Empty the powder into the trash in the morning before wearing.