Mix together a cup of either baking soda or cornstarch with a couple of drops of your favorite essential oil. Citrus or peppermint flavors are popular scents. Store it in a plastic container with a lid.
Sprinkle a couple of tsp. of the mixture in your shoes each night and shake it around to spread it throughout the shoe. Dump the mixture into a trash can each morning.
Create homemade sachets for your shoes by cutting off the feet of pantyhose or nylon stockings, according to the FC&A Publishing's "Old Fashioned Cures and Proven Home Remedies." Tie a knot in the top of the hosiery after filling it with the scented powder. Once the sachet loses its pleasant scent, toss it out and make a new homemade odor eater.