Clean First, Disinfect Later: The Hidden Dangers of Misusing Household Disinfectants
Experts warn that disinfectants aren’t a substitute for cleaning: dirt and grease shield germs, so surfaces should be scrubbed with soap and water first and disinfectants must remain wet on the surface for 1–10 minutes to be effective. Disinfecting is mainly needed after food preparation or when someone is ill. Overuse or misuse of disinfectants—especially quaternary ammonium compounds (QACs)—can pose health risks (inflammation, immune/reproductive effects) and environmental harm, and may contribute to antimicrobial resistance. Safer options include soap and water, sanitizers for high-touch items, and less-toxic cleaners like alcohol (70%), hydrogen peroxide, citric/lactic acids; avoid mixing chemicals and always follow label instructions. Dry steam is another chemical-free alternative for killing germs.**
