How Long To Leave Baking Soda On Mattress?

When freshening up your mattress with baking soda, it’s generally advised to leave it on for at least 15 minutes and up to 24 hours to achieve the best results. This range allows the baking soda to absorb moisture, neutralize odors, and break down stains effectively. However, the timeframe can vary depending on the specific condition of your mattress and how deeply you want to clean it.

Understanding the Power of Baking Soda

Before diving into the specifics of how to use baking soda on your mattress, it’s important to understand why this commonplace household item is so useful for cleaning and deodorizing purposes.

What Makes Baking Soda Effective?

Baking soda, or sodium bicarbonate, is a mildly alkaline substance that serves as a versatile cleaner and deodorizer. One of its key properties is its ability to neutralize both acidic and alkaline substances, which helps eliminate odors rather than merely masking them. Additionally, its fine, slightly abrasive texture helps loosen and lift dirt and stains from surfaces without causing damage.

Reasons to Use Baking Soda on Your Mattress

Your mattress can accumulate a variety of unpleasant things over time, including sweat, oils, dead skin cells, and even dust mites. These can all contribute to a less-than-fresh feeling and can negatively affect your sleep environment. Applying baking soda to your mattress can help address these issues in several ways:

Absorbing Moisture

Baking soda is hygroscopic, which means it has the ability to absorb moisture from the surrounding environment. When spread across your mattress, it soaks up any existing moisture, such as sweat, which can deter the growth of mold and mildew.

Neutralizing Odors

Odors are often the result of volatile organic compounds (VOCs) or other odor-causing bacteria. Baking soda neutralizes these odors, leaving your mattress smelling clean and fresh.

Cleaning and Removing Stains

The gentle abrasive quality of baking soda makes it suitable for cleaning surface stains. While it’s not a miracle cure for deep-set or old stains, it can help lighten them and clean the surrounding area.

Step-By-Step Guide: Using Baking Soda on Your Mattress

Applying baking soda to your mattress is a straightforward process, but it’s important to do it correctly to achieve the best results.


Start by stripping your mattress of all bedding and wash it according to the manufacturer’s instructions. While your bedding is in the laundry, use a vacuum with an upholstery attachment to remove any loose debris from the mattress.


Evenly sprinkle a thin layer of baking soda across the entire surface of your mattress. For added freshness, you can mix a few drops of essential oil, like lavender or eucalyptus, with the baking soda before applying it.

Let It Sit

Leave the baking soda on the mattress for at least 15 minutes. However, if your mattress has a prominent odor or visible stains, you might want to keep it on for a couple of hours or even overnight. In case of severe issues, leaving it up to 24 hours can be beneficial.


After the baking soda has had time to work its magic, use your vacuum’s upholstery attachment again to clean up the powder. Ensure you thoroughly remove all the baking soda, as any residue can continue to absorb moisture and possibly create a mess.

Airing Out

If possible, let your mattress air out by leaving it uncovered for a few hours after vacuuming. This helps to ensure that any remaining moisture has a chance to evaporate.

Frequent Concerns and Tips

When using baking soda on your mattress, there are a few common concerns and additional tips to consider for the best outcomes.

Will Baking Soda Damage My Mattress?

Baking soda is generally safe for most types of mattresses. However, if you have a mattress with a delicate fabric cover or specific cleaning instructions from the manufacturer, it’s always advisable to spot test or adhere to the provided guidelines.

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How Often Should I Apply Baking Soda to My Mattress?

You don’t need to use baking soda on your mattress too frequently. Doing so every few months, or when you notice odors or after any spills, is typically sufficient. Regular vacuuming and maintenance can keep your mattress fresh between deeper cleans.

Can I Combine Baking Soda with Other Cleaners?

While baking soda can be used in conjunction with other natural cleaners, like white vinegar, you should avoid mixing it with harsh chemicals to mitigate the risk of unwanted reactions.

Finishing Thoughts

Baking soda is a simple yet effective cleaning agent that can greatly improve the cleanliness and freshness of your mattress when used properly. By allowing it to sit for a suitable amount of time—ranging from 15 minutes to 24 hours, depending on the severity of the situation—you can ensure efficiency in moisture absorption, odor neutralization, and light stain removal. Safe and easy to use, baking soda is an excellent option for those seeking a cost-effective and natural method to maintain their mattress in top-notch condition. Whether as part of a regular cleaning routine or to address specific spills and odors, knowing how to utilize baking soda will aid in providing a cleaner and more hygienic sleep environment.


  • Ashton Roberts

    I love learning and sharing everything about sleep. I am one of the energetic editors here at GoodSleepHub, where I talk about how to get a better night's sleep. When I'm not writing, I'm probably walking my dog Luna or trying out new sleeping gadgets. My goal is to help you sleep easier and better. Join me, and let's find simple ways to enjoy great sleep every night!

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