Sneakers are warm, closed and often damp from sweat, which is the perfect setting for bacteria that cause that familiar, unwelcome smell. Before you reach for a pricey spray, there is a cheaper fix sitting in your kitchen: baking soda. It is a simple, low-cost way to freshen shoes, and it takes only a few minutes of effort. Here is what it does, how to use it and how often to repeat it.
Shoe odour comes from sweat and the bacteria that feed on it. Baking soda helps in two ways. It absorbs moisture, which bacteria need to thrive, and it helps neutralise the acidic smells that build up in insoles. It does not clean the shoe or kill every germ, so think of it as a deodoriser that works best on shoes that are already dry. Sprinkling it inside shoes overnight tackles the odour source directly, since shoes hold on to sweat residue even after you wash your feet.
This article is intended for general informational and household purposes only. Results vary with the shoe material, the level of odour and individual conditions. Test any method on a small hidden area of delicate shoes first, and follow the care label. Baking soda does not treat foot infections. People with diabetes, skin conditions or open wounds should consult a doctor or podiatrist before trying home remedies on their feet.