How to clean a mattress with baking soda?

A mattress that retains a "musty" smell, a stubborn ring, or a small stain that spreads... don't put off cleaning your mattress for fear of damaging it.

There's a simple, economical, and incredibly effective solution: baking soda. Used correctly, it helps remove certain types of stains (blood stains, rings, yellowed areas, etc.), as well as deodorize and absorb moisture from your mattress.

In some cases, baking soda alone isn't enough to clean your mattress. In this article, we share all our baking soda tips, as well as stain removal recipes adapted to every situation (white vinegar for rings, hydrogen peroxide for old stains), not to mention essential precautions for a clean result... without rings reappearing when drying.

To go further: our guide to disinfecting a mattress.

In brief

• Dry cleaning: after vacuuming the mattress, sprinkle a thin layer of baking soda over the entire surface, let it sit for at least 30 to 45 minutes (longer if the smell is stubborn), then brush gently and vacuum. Without adding water, baking soda captures surface moisture and neutralizes odors.
  
  
• Yellow rings (perspiration): apply a mixture of white vinegar diluted with water (ideally by dabbing, without soaking), then finish by applying baking soda for several hours before vacuuming.
  
  
• Old stains or those related to fluids: use the recipe of 3% hydrogen peroxide + baking soda + a few drops of dish soap in a light application, let dry, then vacuum (test beforehand on an inconspicuous area).
  
  
• To clean successfully, complete drying is essential. If the mattress remains damp, odors and rings can reappear. And the thicker it is, the longer it needs to be ventilated (open window, draft, fan, or hairdryer).

Why is baking soda effective on a mattress?

Baking soda has three advantages that make it essential for cleaning a mattress:

• It absorbs moisture: practical if your mattress smells musty or if the room is a bit humid.
  
  
• It neutralizes odors: perspiration, sleep odors, damp laundry... baking soda helps restore fresher bedding.
  
  
• It helps loosen certain dirt: especially when used with an adapted method (white vinegar, hydrogen peroxide, dish soap...).

For very old or deeply ingrained stains, however, baking soda reaches its limits when used alone. It remains perfect for dry cleaning and finishing (odors, humidity, maintenance), but to tackle the most stubborn marks, it is often preferable to combine it with another ingredient.

Essential equipment

• 250g baking soda
• A sieve or fine strainer (for even distribution)
• A vacuum cleaner
• A soft brush
• One or two clean microfiber cloths

Depending on the stain, it may also be useful to have a sponge and a spray bottle.

The 3 golden rules

1. Always vacuum before applying anything.
2. If wet cleaning is necessary, the mattress should remain barely damp (never wet).
3. Complete drying is mandatory: do not make the bed until the mattress is perfectly dry.

Practical tip: if possible, clean in the morning to allow the mattress time to dry properly.

Dry cleaning a mattress with baking soda

This is the simplest and safest method to refresh a mattress and reduce odors.

1. Vacuum the surface, seams, and edges thoroughly.
2. Sprinkle a thin layer of baking soda over the entire mattress using a sieve (for fine and even distribution).
3. Leave it on for about 30 to 45 minutes for a classic cleaning. If the odor is stronger, you can leave it on longer, as long as the room is well-ventilated.
4. Brush gently (soft brush) to dislodge the powder, without damaging the fabric.
5. Vacuum again to remove all baking soda residues.

This method is perfect for regular maintenance. It is also very useful as a finishing touch, after a more humid localized cleaning, to absorb residual moisture.

All baking soda tips for cleaning your mattress

Baking soda + essential oils

Ideal for: musty odors, refreshing bedding.

Instructions: mix the baking soda with a few drops of essential oil (e.g., lavender or tea tree), then apply as for dry cleaning (leave on, light brushing, vacuuming).

Precautions: avoid in case of respiratory sensitivity/allergies, in the presence of young children or sensitive animals. Do not overdose: a few drops are enough.

Diluted white vinegar then baking soda: refresh an area without soaking

Ideal for: small localized stains and odors.

Instructions:

1. Dab the area with a cloth lightly soaked in white vinegar (pure or diluted in a little water).
2. Leave on for a few minutes, then dab to remove excess.
3. Sprinkle with baking soda, leave on for a few hours, then vacuum.

Precaution: the mattress should remain barely damp. If you wet it too much, the stain may reappear when drying.

3% hydrogen peroxide + baking soda + dish soap

Ideal for: stains related to fluids (e.g., urine), stubborn marks, associated odors.

Recipe (in spray bottle):

• 1 cup 3% hydrogen peroxide
• 3 tablespoons baking soda
• a few drops of dish soap

Instructions:

1. Mix gently until dissolved (avoid shaking vigorously).
2. Apply lightly to the area.
3. Let dry completely, then vacuum up residues.

Precaution: test on an inconspicuous area (some fabrics may lighten).

Blood stain: cold treatment, then baking soda

Ideal for: fresh or dried blood (act as soon as possible).

Instructions:

1. First dab with cold water (avoid heat).
2. Then apply baking soda (powder or light paste depending on the situation).
3. Leave on, then vacuum and let dry.

Small stains: baking soda paste for gentle localized stain removal

Ideal for: small surface stains, moderate dirt.

Instructions:

1. Make a paste with baking soda + a little water.
2. Apply locally, leave on.
3. Remove by dabbing (slightly damp cloth), then let dry before making the bed again.

Stubborn stains: reinforced method for stain removal without damage

When the stain is very visible (old halo, blood stain, stubborn stain), dry baking soda is not always enough. In this case, the goal is to remove the stain locally with a more powerful method, while remaining cautious.

What you'll need

• washing soda
• 3% hydrogen peroxide
• lukewarm water
• sponge + clean cloth
• gloves (and ideally safety glasses)

Instructions:

1. Prepare a solution by diluting the washing soda in a mixture of lukewarm water and 3% hydrogen peroxide.
2. Soak the sponge, then apply to the stain.
3. Work the area without circular motions (to avoid spreading).
4. Leave on for the necessary time, then let air dry.
5. Once the area is almost dry, finish with dry baking soda (apply + vacuum) to absorb remaining moisture.

Precautions and common mistakes

• Too much water: this is the number one cause of returning marks.
• Rubbing hard: this can spread the stain and damage the fabric. Prefer dabbing.
• Making the bed too soon: as long as the mattress is not dry, wait before putting on the bedding.
• Strong products without protection: gloves and ventilation are essential.
• Risky mixtures: avoid "random" combinations and never mix incompatible products.

How often to use baking soda on a mattress?

For regular maintenance of your mattress and in case of odors, cleaning with baking soda can be done:

• routinely, once a month,
• occasionally after a period of heavy sweating, humidity, or a persistent bad odor.

To extend the life of your bedding, browse our guide dedicated to mattress care.