Chemists Explain Why Baking Soda and Vinegar Aren't the Ultimate Natural Cleaning Duo

Many of us rely on trusted cleaning hacks, and the fizzy reaction of baking soda and vinegar is a favorite for tackling everything from pots to bathroom surfaces. But does this bubbly reaction truly clean effectively, or is it just a show? We consulted two chemists to uncover the science behind this popular method and reveal why it often falls short as a natural cleaning powerhouse.

The Science Behind Mixing Baking Soda and Vinegar 

Let’s dive into the chemistry. “The interaction between vinegar (an acid) and baking soda (a base) is a classic acid-base reaction, often introduced in high school,” explains Bill Wuest, PhD, a chemistry professor at Emory University. “When combined, these substances react to generate carbon dioxide gas, which creates the visible bubbles.” He notes that this is the same gas we exhale during respiration.

Jamie Mitri, an engineer with expertise in chemical engineering and biology and the creator of MossPure, elaborated further. “Acids and bases are distinguished by their pH levels,” she explains. “The pH scale ranges from 0 to 14. Substances with a pH below 7 are acidic, while those above 7 are basic.” Still following? Great, let’s move forward.

Why This Combination Falls Short in Most Cleaning Scenarios

Despite the impressive fizzing reaction, combining these two cleaning staples isn’t as effective as it seems, according to experts. The ingredients essentially neutralize each other, turning into salty water. While the bubbles provide some mechanical action, it’s usually insufficient to remove tough residue, like that on a pan.

Dr. Wuest points out that while carbon dioxide is released—a compound sometimes used by professional cleaners—the concentration achieved by mixing household vinegar and baking soda is far weaker. “Professional applications use it in a more potent form,” he adds. 

“Individually, both baking soda and vinegar excel at tackling grease, grime, and stubborn residues in drains, cookware, sinks, and bathtubs,” Mitri explains. “However, for thorough cleaning, you need an agent with preservative or antibacterial properties to ensure proper disinfection—something this combination lacks.”

What Are the Best Uses for Baking Soda and Vinegar? 

While the combination may not be a universal cleaning solution, both substances are highly effective at removing tough debris when used independently, Mitri notes.

According to the University of Georgia Extension office, baking soda, a mild soluble salt, is excellent for cutting through grease, cleaning oven spills, neutralizing odors, and polishing surfaces like tile, glass, and enamel. Their Green Cleaning publication suggests mixing two tablespoons of baking soda with one quart of warm water for cleaning refrigerator interiors and plumbing fixtures.

On the other hand, vinegar serves as a mild acid, ideal for removing hard-water stains, discoloration on metals, and rust marks. For example, soaking a paper towel in vinegar and placing it on a lime-encrusted faucet can effectively clean it. Vinegar also works well for laminate floors when mixed with half a cup of white vinegar and a gallon of warm water for mopping.

Feel free to make the most of these natural cleaning agents, but consider using them individually to maximize their effectiveness.