The short answer
Find the Source First
A musty odor is almost always a sign of moisture. Before you try to mask it with sprays or candles, look for the cause. Check under sinks, around windows, in the basement, and behind appliances. A damp carpet, a wet wall, or a leaky pipe can all produce that smell.
Sometimes the source is not obvious. Moisture can hide inside wall cavities, under flooring, or in the attic. If you cannot find the problem, a moisture mapping service can help identify hidden damp spots. You can also use a simple moisture meter if you have one.
- Check for visible leaks under sinks and around toilets
- Look for water stains on ceilings or walls
- Smell carpets, upholstery, and curtains
- Inspect the attic and crawlspace for damp insulation
- Check the HVAC system and air ducts for mold
Dry Out the Area
Once you find the moisture, your goal is to dry everything completely. Open windows and doors to increase airflow. Use fans to move air across damp surfaces. If the humidity is high, a dehumidifier can pull moisture from the air and speed up the drying process.
For larger areas, like a flooded basement or a soaked wall, you may need professional help. Structural drying and dehumidification services use industrial equipment to dry building materials thoroughly. This step is important because leftover moisture will keep the smell coming back.
- Run fans for at least 24 to 48 hours
- Use a dehumidifier in closed spaces
- Remove wet carpet and padding
- Cut out wet drywall if it is sagging or crumbling
- Dry out wood furniture and other porous items
Remove Odor-Trapping Materials
Some materials absorb odors and cannot be fully cleaned. Carpet, drywall, insulation, and upholstery often need to be removed and replaced. If you try to clean them, the smell may return once they get damp again. Be honest with yourself about what can be saved.
For salvageable items, wash them with a mild detergent and water. Let them dry completely in the sun or with good airflow. For hard surfaces, a solution of vinegar and water can help neutralize odors. Baking soda can also absorb smells in small spaces.
- Throw out wet carpet, padding, and drywall
- Wash curtains and clothing in hot water
- Use a HEPA vacuum on carpets and upholstery
- Place bowls of baking soda in small rooms
- Wipe hard surfaces with vinegar and water
Clean Air Ducts and Vents
If the musty smell comes from your heating or cooling system, the air ducts may be the culprit. Dust, moisture, and mold can collect inside ductwork and spread the odor throughout your home. You can check visible vents for mold, but a full cleaning requires special tools.
Professional air duct cleaning involves brushing and vacuuming the entire duct system. This is especially important if you have had a water leak or high humidity. Clean ducts can improve indoor air quality and remove the musty odor at its source.
Prevent Future Musty Smells
Once the smell is gone, keep it from coming back by controlling moisture. Fix any leaks right away. Use exhaust fans in bathrooms and kitchens. Keep indoor humidity below 50 percent, especially during humid months.
Regularly check your home for signs of water damage. A water damage inspection can catch small problems before they become big ones. If you do find a leak, act quickly to dry the area. The longer moisture sits, the more likely mold will grow and the smell will return.
Talk to someone now
Phones are answered 24/7 for Rogers and nearby communities.
Call Now (479) 370-1500Frequently asked questions
How long does it take to get rid of a musty smell?
It depends on the source and how much material is affected. Small areas may dry in a few days with fans and a dehumidifier. Larger problems, like a flooded wall or carpet, can take weeks. If the smell persists, you may need to remove and replace materials.
Can I use bleach to remove musty odors?
Bleach can kill mold on hard surfaces, but it does not remove odors from porous materials like wood or drywall. Also, bleach can be harmful if used in large amounts. For porous items, cleaning with detergent and drying thoroughly is often more effective.
Is a musty smell always mold?
Not always. A musty smell can come from trapped moisture, mildew, or even a dead animal in a wall. Mold is a common cause, but you cannot be sure without seeing it. If you suspect mold, a mold professional can test and identify the problem.