Things You'll Need:
- Citrus-based cleaner spray
- Rag
- Baking soda
- Vacuum
- Mildewcide
- Dehumidifier (optional)
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Step 1
Wash your blankets, sheets, pillow cases, pillows and other upholstery on the bed. Dust, dead skin cells, body oil and other debris can collect within the fibers of the upholstery and create a bad smell. Dry the upholstery thoroughly to remove moisture---another common cause of musty odors.
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Step 2
Clean the outside of the mattress; most musty bed smells come from the mattress. Spritz with a citrus-based spray cleaner, which cuts through built-up dirt and grime while also neutralizing smells. Wipe down thoroughly with a rag or paper towels.
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Step 3
Dust the outside of the mattress with a layer of baking soda, which will help dry the surface fibers while also absorbing odors, quickly freshening the mattress. Let the baking soda sit on the mattress for 30 minutes. Vacuum the powder away using a standard vacuum cleaner.
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Step 4
Place the mattress in the sun for 6 to 8 hours. Ultraviolet rays have a natural sterilizing effect. The sun will also dry out the mattress. Moisture sometimes lurks deep within the mattress, and a prolonged session of sunshine can help dry out the mattress's core.
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Step 5
Remove mildew, the most common source of musty smells. Use a commercial mildewcide, available in the household department of most general retailers. Follow the product's specific guidelines for cleaning, as chemical potency varies by manufacturer.











