Why Do Some People Sprinkle Baking Soda Under the Bed?

 

Every family seems to have that one person who swears by an old household trick that sounds strange at first.

For my grandmother, it was always baking soda.

Every night before going to bed, she’d sprinkle a small amount underneath her bed. The first time I saw her do it, I couldn’t help but laugh. She simply smiled and said, “One day you’ll understand why.”

Years later, I finally looked into it—and while it isn’t magic, there are a few practical reasons why many people still use this old trick.

1. It Helps Neutralize Odors

Baking soda is one of the best natural odor absorbers available.

Unlike air fresheners that simply mask unpleasant smells, baking soda works by neutralizing odor-causing compounds. Because dust, pet hair, and moisture often collect under the bed, odors can gradually develop over time.

Sprinkling a small amount of baking soda underneath the bed may help keep the area smelling fresher.

2. It Can Absorb Moisture

Hidden spaces under furniture often trap humidity, especially in warm or poorly ventilated rooms.

Baking soda can absorb small amounts of moisture, helping reduce damp odors and making the area feel fresher.

While it isn’t a replacement for a dehumidifier, many people use it as a simple household deodorizer.

3. It Freshens Carpets and Rugs

If your bed sits on a carpet or rug, baking soda can also help freshen the fibers.

Many homeowners sprinkle it on carpets, leave it for several hours, and then vacuum it up to help remove lingering odors.

Any excess baking soda under the bed can be vacuumed away during regular cleaning.

4. It’s Inexpensive and Natural

Unlike many commercial odor-control products, baking soda is:

• Affordable
• Fragrance-free
• Non-toxic when used appropriately
• Easy to find in almost every grocery store

That’s one reason it has remained a favorite household product for generations.

Does It Repel Insects?

You may have heard claims that baking soda keeps away ants, spiders, bed bugs, or other pests.

However, there is little scientific evidence that simply sprinkling baking soda under a bed effectively repels household insects. While many online posts repeat this claim, experts generally do not recommend relying on baking soda as a pest-control solution.

Is It Safe?

Yes—when used properly.

If you decide to try this household trick:

• Sprinkle only a thin layer.
• Keep it away from small children and pets who may ingest large amounts.
• Vacuum it up after a day or two.
• Repeat as needed to help control odors.

Why Has This Trick Been Passed Down for Generations?

Long before modern air fresheners and odor-eliminating sprays existed, families relied on simple household ingredients to keep their homes clean and fresh.

Baking soda became one of the most trusted products because it was inexpensive, effective at absorbing odors, and available in nearly every home.

Although it may seem like an old-fashioned habit today, many people still use this simple trick as part of their regular cleaning routine.

The Bottom Line

Sprinkling baking soda under the bed isn’t a magical household secret—but it can be a practical way to help reduce odors, freshen carpets, and absorb a small amount of moisture.

Sometimes the best cleaning hacks aren’t new inventions at all—they’re the simple tricks our grandparents have quietly used for decades.