When was the last time you deep-cleaned your mattress?
If you can’t remember, don’t worry — most people can’t. But here’s the truth: even if you wash your sheets weekly and use a mattress protector, your mattress still collects sweat, dust, oils, and odors over time.
Let’s break down why you should sprinkle baking soda on your mattress before cleaning or vacuuming — and how to do it for the best results.
Luckily, there’s a simple, inexpensive, and chemical-free way to freshen it up — baking soda. That’s right. The same humble box you keep in your pantry or fridge can do wonders for your mattress.
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1. Neutralizes Odors Naturally
Baking soda, or sodium bicarbonate, is a natural deodorizer. It works by neutralizing acids and absorbing odor-causing molecules. At least, that’s what my research says. Bottom line: Unlike sprays or air fresheners that only mask smells, baking soda eliminates them at the source.
If your mattress smells a little stale — maybe from body sweat, pets, or humidity — a sprinkle of baking soda can instantly freshen it up. After just 30 minutes, you’ll notice the difference.
💡 Pro tip:For an even better scent, mix in a few drops of essential oil like lavender or eucalyptus before sprinkling. You’ll get that “freshly washed” smell without any harsh chemicals.
Mattresses naturally absorb moisture from sweat, humidity, and body oils. Over time, that moisture can lead to unpleasant odors or even promote bacterial growth.
Baking soda helps by drawing out excess moisture and oils trapped in your mattress fibers. This makes your bed feel cleaner, drier, and more comfortable — especially if you live in a humid climate.
Moisture creates the perfect environment for bacteria and mold to thrive. Using baking soda helps combat that by keeping your mattress dry and balanced. It doesn’t disinfect like bleach, but it helps minimize conditions that lead to microbial buildup — without damaging your mattress or releasing harsh fumes.
Pair this with regular vacuuming, and you’ll create a cleaner, healthier sleep surface that’s better for your skin and your allergies.
When you let baking soda sit for at least 30 minutes to an hour, it helps loosen dirt and debris trapped deep inside the mattress fibers.
After it has done its job, vacuuming becomes much more effective. You’ll remove not only the baking soda but also the hidden dust mites, crumbs, and lint that have built up over time.
💡 Bonus: If you have pets, this step can help reduce dander and odor transfer to your bedding.
One of the best parts about using baking soda is that it’s completely non-toxic and eco-friendly. You’re not exposing yourself or your family to synthetic chemicals or artificial fragrances.
It’s also safe for kids, pets, and sensitive skin — and it won’t damage the fabric or foam of your mattress. That makes it a great choice for anyone pursuing a more natural and sustainable cleaning routine.
If you already love DIY cleaning with vinegar, lemon, or essential oils, baking soda deserves a permanent spot in your cleaning toolkit.
Here’s how to use baking soda the right way to refresh your mattress:
1. Strip your bed completely. Remove all sheets, pillowcases, and mattress protectors. Wash your bedding in hot water to kill dust mites and bacteria.
2. Vacuum the mattress surface. Use the upholstery attachment on your vacuum to remove loose debris, hair, and crumbs.
3. Sprinkle baking soda generously. Use about one cup for a queen mattress. You can mix it in a bowl first with a few drops of essential oil if you want a light scent.
4. Let it sit. Leave it for at least 30 minutes, or up to a few hours if you can. The longer it sits, the more moisture and odors it absorbs.
5. Vacuum thoroughly. Use slow, overlapping strokes to remove all the baking soda and lifted dirt.
6. Air it out. If possible, open a window or run a fan to let the mattress breathe before remaking the bed.
How Often Should You Do It?
Once a week is ideal. For me, bedsheet laundry is on Sundays. I’m not going to lie. I hate changing bedsheets, so I have my husband and kid help. It goes so much faster when we do it all together. This is a non-negotiable for me.
If you’re short on time, aim for at least once every other week — or after big spills, humid weather, or sickness. This small effort can extend the life of your mattress and make your bedroom feel cleaner and fresher overall. But more importantly, it’s better for YOU.
And yes — from what I’ve seen so far, it’s completely safe for memory foam, latex, and hybrid mattresses. Just make sure to vacuum thoroughly so no residue remains.
Extra Tips for a Fresher Bed
Rotate your mattress every few months to help it wear evenly.
Use a waterproof mattress protector to reduce buildup of oils and spills. Waterproof mattress protectors have been a lifesaver with kids. HIGHLY RECOMMEND.
Let sunlight hit your mattress occasionally — UV rays naturally kill bacteria and freshen fabrics. The sun is our friend!
Avoid liquid cleaners — they can soak in and damage the foam or inner materials. I’m personally not a huge fan of them.
The Bottom Line
Sprinkling baking soda on your mattress before cleaning isn’t just a random hack — it’s a science-backed, natural cleaning method that works.
It neutralizes odors, absorbs moisture, lifts dirt, and helps you maintain a healthier sleep environment without any harsh chemicals or fancy products.
The best part? It costs less than a cup of coffee and takes only a few minutes to do.
So next time you strip your bed, grab that box of baking soda from your pantry — your mattress will thank you for it.
Ready to Try It?
Save this post for your next cleaning day, and don’t forget to follow Befriending My Home for more natural, affordable home hacks that make everyday cleaning easier.
Got a tip you want to share? Share it in the comments or tag @befriendingmyhome on Instagram—I love seeing your hacks!
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Learn why sprinkling baking soda on your mattress before vacuuming is the ultimate natural cleaning hack for a fresher, healthier bed.
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