Remove Shoe Odor With Baking Soda: 2 Safe Methods

Shoe odor comes from bacteria thriving in the damp environment inside the lining. Baking soda is not a perfume that masks the smell — it absorbs moisture and neutralizes odor compounds, the same principle as the box of baking soda you keep in the fridge. It is also the cheapest deodorizing method you can do at home.

Why baking soda works on shoe odor

Sweat is mildly acidic, and damp air inside shoes is where bacteria multiply. Baking soda is mildly alkaline, so it partly neutralizes that environment while pulling moisture out — making it harder for bacteria to keep growing. Three practical advantages:

• Gentler than most odor sprays: no heavy fragrance stuck in the lining.
• No chemical smell blending with sweat afterwards.
• A few thousand dong per treatment.

Know the limit first: baking soda works on odor at the surface and in the air inside the shoe. Odor that has soaked into the lining over months, or musty smell after the shoes got wet, is only reduced temporarily — the source stays.

Method 1: A baking soda pouch — safe for every material

This is the default method, including leather, suede, and shoes with glued soles.

1. Put 2–3 tablespoons of baking soda on a thin cloth square or a clean old sock and tie it into a small pouch.
2. If you prefer a mild scent, add 1–2 drops of essential oil onto the outside of the pouch — never directly onto the shoe.
3. Place one pouch in each shoe right after taking them off and leave overnight, up to 24 hours.
4. Remove the pouches and tap the shoes lightly before wearing them again.

A used pouch can be dried out in an airy spot and reused a few times. For leather and suede shoes, this is the only method you should use — the reason is below.

Method 2: Sprinkle directly — canvas and rubber soles only

1. Sprinkle a thin layer of baking soda inside the shoe and shake to spread it over the contact areas.
2. Let the shoes rest for 24 hours in a dry spot.
3. Shake all the powder out and tap the shoes before wearing — leftover powder sticks to socks and whitens the lining.

Why not sprinkle directly on leather or suede: the powder pulls out the leather's own moisture, leaves white residue in creases, and makes the leather gradually dry and brittle. Suede holds onto the powder especially badly.

Fixing smelly worn-bare sandals

Sandals worn without socks hold odor that is extremely stubborn. Put about half a cup of baking soda in a large zip bag, drop the sandals in, seal, and shake to coat everything. Wait 24–48 hours, take them out, shake off the powder, and wipe the straps with a damp cloth. For leather or suede straps, wipe every trace of powder off the strap.

Keeping the odor from coming back

• Rotate several pairs — never wear the same pair two days in a row; a shoe needs about a day to dry out fully.
• After rain, remove insoles and laces and dry the shoes in a shaded, airy spot — no direct sun and no dryer.
• Wear socks when possible — they absorb most of the sweat before it reaches the lining.
• For heavy, long-built-up sweat odor, replacing the insoles works better than repeating deodorizing cycles.

For odor that comes with mold, see moldy shoes that still smell — causes and fixes and the full washing routine in how to wash smelly shoes.

When to hand them to EXTRIM

Odor soaked into the lining, shoes that stayed wet for a long time, or smell that comes with mold — baking soda only reduces these temporarily. EXTRIM offers shoe cleaning and spa in Ho Chi Minh City: deep cleaning from 150,000 VND per pair (2026 reference), lining deodorizing and mold treatment depending on actual condition — final price confirmed after inspection.

👉 Send photos of your smelly shoes for advice

Public case studies

Photos in this article illustrate the process — they are not a before–after record with a public case code. EXTRIM does not use illustrative images to promise results for every pair.