Baking soda also works well for removing odor-causing bacteria in shoes. Simply sprinkle some inside the soles of your shoes and let it absorb the bacteria before vacuuming it out.
Many people use vinegar as the basis of their own DIY surface cleaner. Take an empty spray bottle and fill it with one part water and one part vinegar. If you want to enhance the scent of your cleaner you can add a few drops of lemon, orange, or lavender essential oil which have their own antibacterial properties and will help you get a better clean.