Smelly Shoes
Older shoes tend to develop odors thanks to all the wear and tear we put on them. Generally speaking, the smell is caused by bacteria that has accrued from all those times at the gym or out on the town, and the bacteria is often caused by moisture in the shoe. Silica gel packs can help absorb this additional moisture and keep your shoes fresher for longer.
Additionally, you can make odor-absorbent pouches (as seen above) by removing the little silica gel balls from the packets, putting them into a bowl, and adding essential or aroma oils. Dump the fragrant silica gel beads into a small pouch and place them inside your shoes.