Eight methods for deodorizing cotton slippers:

1. Dip some alcohol in cotton and stuff it into your shoes. After a night, the alcohol evaporates and the odor can be removed. You can wear it again the next day.
2. Use a slightly hard piece of paper to wrap camphor balls and stuff them into your shoes; Or crush the camphor balls and evenly sprinkle the powder onto the shoes. Put insoles on top, and a pair of shoes only needs about one camphor ball. This can keep the inside of the shoes dry and also remove shoe odor. Camphor balls have excellent antibacterial effects and can also kill bacteria that proliferate in large numbers due to dampness.
3. Every night before going to bed, put quicklime powder into a small cloth bag and put it into your shoes to absorb moisture. Lime bags can also kill bacteria inside shoes, play a certain role in removing shoe odor, and can be reused.
A simpler method is to sprinkle some salt into the shoes, which can absorb sweat and deodorize. (However, cleaning it up is a bit troublesome)
5. You can buy some spray similar to deodorant on the market and spray them on the shoes every day to alleviate shoe odor.
6. Alum also has a deodorizing effect, and you can sprinkle some alum powder into your shoes. (Generally available in Western medicine stores)
7. If your shoes are left in the shoe cabinet without wearing them, you can place a piece of soap next to them to achieve a deodorizing effect.
8. Wrap some dry tea leaves in glass stockings and stuff them into sneakers, which have the effect of cleaning, disinfecting, and volatilizing the odor.