Baking soda and vinegar have dominated social media as the ultimate washing machine cleaning hack. However, chemical engineer Diego Fernández, known online as @renovandoconideas, says this viral trick is completely useless.
In a recent Instagram video, the expert dismantled the popular DIY myth. Instead of the standard pantry staples, he offered a highly effective alternative for eliminating hard water stains and detergent buildup.
The Chemistry Behind the Myth
“Do baking soda and vinegar work to clean the washing machine? No. This doesn’t work because baking soda and vinegar neutralize each other,” Fernández explained.
When mixed, one ingredient acts as a base and the other as an acid. The resulting bubble reaction is visually satisfying but chemically ineffective.
The mixture merely produces water, carbon dioxide, and salt. This reaction fails to dissolve trapped limescale or leftover detergent inside the appliance.
Baking soda is equally ineffective on its own. The expert noted that the powder simply lacks the chemical capacity to break down tough washing machine residue.
Why Vinegar Alone Falls Short
Vinegar can theoretically work, but the required volume makes it impractical for standard household use.
“Vinegar by itself does work, but you would have to use 2 liters of industrial vinegar, and if it is kitchen vinegar, at least 4 liters,” Fernández said.
Most people only use a small splash of vinegar in their cleaning routine. According to the engineer, this tiny amount renders the cleaning effect virtually nonexistent.
The Superior Alternative: Citric Acid
Instead of standard household liquids, Fernández recommends a different powerhouse ingredient: citric acid.
“Citric acid has a higher acidity level than vinegar, so it’s going to work better,” he explained. This higher acidity directly targets hard water stains and stubborn residue inside the drum.
It is also much safer for your appliance. Fernández pointed out that citric acid is less corrosive than vinegar, significantly reducing the risk of damaging the washing machine’s internal components.
To use this method, add four tablespoons of citric acid directly into the washing machine drum. Run a dedicated drum cleaning cycle or a long wash cycle using hot water.
Maintenance Matters
Using the right product is only half the battle. Regular maintenance is required to prevent mold, odors, and poor wash results.
“Clean your washing machine once every 3 or 4 months to keep it in good condition, avoid bad odors, and ensure your clothes come out clean,” Fernández advised.
Neglecting this routine allows moisture and soap scum to accumulate over time. Checking the manufacturer’s manual for specific cleaning programs is also highly recommended to keep the appliance running efficiently.
