Can Baking Soda Kill Germs?

Baking Soda and Its Role in Cleaning

Baking soda sits on my kitchen shelf right next to the salt and pepper. My grandmother used it in the fridge to get rid of stubborn smells. Some people sprinkle it in shoes to keep odors away. A few folks even brush their teeth with it, claiming it cleans better than fancy kinds of toothpaste. The real question is, does it do more than deodorize and scrub stained sinks? Can baking soda actually kill germs?

The Science Behind Baking Soda

Baking soda, known to chemists as sodium bicarbonate, gets called a miracle cleaner. Its gentle abrasiveness helps clean away dirt, and its alkaline nature neutralizes acids. But killing germs isn’t just about scrubbing or neutralizing. Pathogens have evolved to survive in all sorts of harsh settings, and they don’t always give up just because a cleaning powder gets sprinkled around.

Plenty of scientific studies have weighed in. Researchers found that baking soda on its own doesn’t do much against bacteria or viruses. The CDC and EPA, for example, leave baking soda off their lists of effective disinfectants. Even when I used it on my own kitchen counters, the smell faded, but swabbing for bacteria showed little difference. Most fungi and household bacteria don’t seem to care about baking soda—they just keep growing.

Some cleaning pros swear by combining baking soda and vinegar. The fizz might look impressive, but this reaction mainly results in salty water, which won’t take out the germs lurking on kitchen surfaces or bathroom tiles either. And even though baking soda’s pH makes certain bacteria uncomfortable, it doesn’t beat them at their own game. Hardier pathogens sometimes survive even after being blitzed with much stronger chemicals.

Why People Still Use Baking Soda

Old habits drive the use of baking soda around the house. It scrubs pots, deodorizes carpets, and removes tea stains. People want it to be a nature-friendly germ killer since it’s cheap and easy to get. After all, nobody wants to douse everything in bleach. A 2020 Scientific Reports paper highlighted people’s search for safer cleaning alternatives, quoting concerns about chemical exposure in households. Yet, science hasn’t found strong proof that baking soda should replace proper disinfectants made for killing harmful germs.

Better Ways to Stop Germs

To truly clean away bacteria and viruses, soap and water work better than dry powders. Soap molecules rip apart virus coatings and help rinse bacteria away. Alcohol-based cleaners, bleach, or hydrogen peroxide knock germs out cold at a chemical level, which is why hospitals and restaurants rely on them. Running a sponge or rag soaked in warm, soapy water has kept my own kitchen safer than powder and a wish.

No matter how many DIY tips float around online, surface cleaning means more than shining and freshening. For health, it’s best to save baking soda for what it does well: removing stains, neutralizing odors, and helping dough rise. If stopping sickness is the goal, a tested disinfectant or plain old soap steals the show.