While baking soda is generally safe for many shoe materials due to its mild, abrasive, and antibacterial properties, it can potentially damage delicate fabrics and certain materials if used improperly. It is best to test on a small, inconspicuous area first and avoid using it on sensitive or porous materials.
Baking soda, or sodium bicarbonate, is widely used for deodorizing and cleaning shoes because of its mild antibacterial and abrasive qualities. According to WikiHow, it effectively removes shoe odor and is generally safe for use on various shoe surfaces when applied correctly, such as by sprinkling inside shoes or making a paste for cleaning (source [1]).
However, caution is advised because baking soda's abrasive nature can potentially harm delicate or porous materials. For example, Monsieurchaussure highlights that baking soda can damage sensitive fabrics and specific trainer materials, especially if used with hot water or scrubbed vigorously, which might loosen soles or cause wear over time (source [2]).
On the positive side, baking soda's mild alkalinity helps dissolve dirt and grease, making it suitable for cleaning without harsh chemicals, and its antibacterial properties can help reduce bacteria that cause odors, making it a safe option for many users, especially those with sensitive skin (sources [3] and [4]).
In summary, baking soda is generally safe for most shoe materials, but it should be used carefully—preferably tested on a small area first—and avoided on delicate, porous, or sensitive fabrics to prevent potential damage.