How to Clean a Mattress
Learn how to clean a mattress with vacuuming, spot cleaning, baking soda, drying, stain and odor tips, mistakes, troubleshooting, and FAQs.

Quick Answer
To clean a mattress, strip the bed, vacuum the surface, spot clean stains with a small amount of mild cleaner, blot instead of soaking, sprinkle baking soda to absorb odor, let it sit, vacuum again, dry the mattress completely, and use a washable mattress protector afterward.
Supplies Required
- Vacuum with upholstery attachment
- Mild dish soap or enzyme cleaner
- White cloths
- Baking soda
- Spray bottle
- Fan or open window
- Mattress protector
Safety Precautions
- Do not soak a mattress; trapped moisture can cause odor or mold.
- Test cleaners on a small hidden area first.
- Follow the mattress care label.
- Do not mix cleaning chemicals.
- Use professional help for mold, bed bugs, or large biohazard stains.
Step-by-Step Instructions
- Step 1
Strip and wash bedding
Remove sheets, blankets, and covers. Wash bedding according to labels.
- Step 2
Vacuum the mattress
Vacuum the top, sides, seams, and crevices to remove dust and debris.
- Step 3
Spot clean stains
Apply a small amount of mild cleaner to a cloth, blot the stain, and avoid saturating the foam or fabric.
- Step 4
Blot with clean water
Use a lightly damp cloth to remove cleaner residue, then blot dry.
- Step 5
Deodorize with baking soda
Sprinkle a thin layer of baking soda and let it sit for several hours if possible.
- Step 6
Vacuum again
Remove baking soda thoroughly, especially around seams.
- Step 7
Dry completely
Use airflow and time. Do not put bedding back until the mattress is fully dry.
- Step 8
Protect it
Add a washable mattress protector to reduce future stains and dust buildup.
Practical Example
Example: You notice a sweat stain and odor. You vacuum, blot the stain with mild soapy water, blot again with clean water, sprinkle baking soda for the afternoon, vacuum, and let the mattress dry before making the bed.
Common Mistakes
- Soaking the mattress
- Scrubbing stains aggressively
- Using colored cloths that transfer dye
- Putting sheets back before the mattress is dry
- Ignoring seams and edges
- Skipping a protector afterward
Troubleshooting
The stain remains
Repeat gentle spot cleaning. Use an enzyme cleaner for organic stains if the care label allows it.
The mattress smells musty
Dry it fully with airflow. If mustiness persists or mold appears, seek professional advice.
Baking soda will not vacuum up
Use the upholstery attachment slowly and repeat passes. Avoid dumping a thick layer next time.
There may be bed bugs
Stop routine cleaning and contact a pest-control professional.
Helpful Internal Links
FAQs
Can I use a carpet cleaner on a mattress?
Avoid soaking methods unless the mattress maker allows them. Too much water can cause problems.
How often should I clean my mattress?
Vacuum every few months and spot clean as needed. Wash bedding much more often.
Does baking soda really help odors?
It can absorb mild odors, but it does not replace stain treatment or full drying.
Can I flip my mattress after cleaning?
Only if your mattress is designed to be flipped. Many modern mattresses should be rotated, not flipped.
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