If your mattress doesn’t smell as fresh as it used to, you’re not alone. Over time, mattresses naturally absorb sweat, body oils, dust, pet odors, and other everyday smells.
Even when you regularly wash your sheets, some of those odors can remain in the mattress itself.
One of the simplest ways to freshen it up is with something you probably already have in your kitchen: baking soda. It’s inexpensive, easy to use, and can help absorb everyday odors without simply covering them with perfume.
Why Does Baking Soda Work on a Mattress?
Baking soda is commonly used as a household deodorizer because it can help absorb and neutralize unpleasant odors.
When sprinkled over a mattress, the fine powder can interact with some of the odor-causing moisture and particles sitting near the surface. Once you vacuum it away, the mattress can smell noticeably fresher.
It’s important to remember, though, that baking soda isn’t a replacement for professional or deep cleaning. It’s best viewed as a simple maintenance treatment between more thorough cleanings.
1. It Helps Neutralize Everyday Odors
Mattresses can absorb odors from many sources, including:
- Night sweats
- Body oils
- Pets
- Food spills
- Humidity
- General everyday use
Sprinkling baking soda over the surface can help freshen the mattress without adding a strong artificial fragrance.
For a particularly noticeable odor, letting the baking soda sit for several hours can give it more time to work.
2. It Can Help With Small Amounts of Surface Moisture
Mattresses can pick up small amounts of moisture from perspiration and humidity.
Baking soda may absorb some of this surface moisture, which can help reduce musty odors.
However, it isn’t designed to dry out a soaked mattress.
If you’ve spilled a large amount of liquid on the bed, the priority should be to dry the mattress thoroughly rather than relying on baking soda alone.
3. It Can Leave the Mattress Feeling Fresher
After the baking soda has been vacuumed away, the mattress may feel cleaner and fresher.
The powder can also help lift small amounts of dust and surface debris that have settled into the fabric.
It won’t restore worn-out cushioning or make an old mattress new again, but it can be a useful addition to a regular bedroom-cleaning routine.
How to Use Baking Soda on a Mattress
The process is simple and doesn’t require special equipment beyond a vacuum cleaner.
Step 1: Remove All Bedding
Start by removing everything from the bed.
Take off:
- Sheets
- Blankets
- Duvets
- Mattress protectors
- Pillowcases
Wash the bedding according to its care instructions while you work on the mattress.
Step 2: Vacuum the Mattress
Before adding baking soda, vacuum the entire mattress surface.
Move slowly over the fabric and pay particular attention to seams, edges, and areas where dust tends to accumulate.
This removes loose dust, hair, and debris before you begin deodorizing.
Step 3: Sprinkle Baking Soda Over the Surface
Sprinkle a thin, even layer of baking soda across the mattress.
You don’t need to cover it with a huge pile of powder.
Try to distribute it as evenly as possible so the treatment reaches the whole surface.
Step 4: Let It Sit
Give the baking soda time to work.
For a light refresh, you can leave it for a while; for stronger odors, leaving it for several hours can be more useful.
If possible, choose a time when you don’t need to use the bed.
Step 5: Vacuum Everything Thoroughly
Once the baking soda has had enough time to sit, vacuum the mattress carefully.
Go over the entire surface several times if necessary.
Make sure you remove as much powder as possible, especially around seams and edges.
Don’t Use Baking Soda on a Wet Mattress
If your mattress has suffered a major spill, don’t simply cover the wet area with baking soda and put the bedding back on.
A heavily wet mattress needs to be dried thoroughly.
Good ventilation and airflow are important, and you should avoid trapping moisture underneath sheets or a mattress protector.
How Often Should You Do This?
There’s no need to sprinkle baking soda on your mattress every day.
Using it occasionally as part of your normal mattress-maintenance routine is enough for most people.
You can also combine it with regular vacuuming and washing your bedding and mattress protector.
What Baking Soda Can’t Do
It’s useful to keep expectations realistic.
Baking soda can help with surface odors and light moisture, but it won’t:
- Repair damaged mattress foam
- Remove every deep stain
- Fix a severely wet mattress
- Replace professional cleaning when that’s necessary
- Make an old mattress structurally new again
If your mattress has a serious stain, persistent odor, mold concern, or significant water damage, a more appropriate cleaning or replacement may be necessary.
Final Thoughts
A mattress naturally collects sweat, body oils, dust, and everyday odors over time.
Sprinkling baking soda over the surface is a simple way to give it a refresh. The powder can help absorb everyday odors and small amounts of surface moisture, while vacuuming afterward removes the baking soda along with some loose surface debris.
The key is to remove the bedding, vacuum first, sprinkle a thin layer of baking soda, let it sit for several hours when needed, and vacuum it up thoroughly afterward.
It’s a simple maintenance trick that can help your mattress smell fresher without requiring expensive cleaning products.
