Billions of Bacteria Swarming... The 'Mass of Germs' Everyone Has at Home Is This

Norwegian Researchers Investigate Household Dish Scrubbers
Harmful Bacteria Including Salmonella Detected
Kitchen Sponges Should Be Replaced Every 1-2 Weeks

A study has revealed that billions of bacteria live on the scrubbers used to wash dishes, spoons, and chopsticks. Scrubbers provide an ideal environment for bacteria to multiply due to their high moisture and accumulation of food residues.

On the 10th (local time), the Norwegian food research institute Nofima research team, introduced by the U.S. National Institutes of Health (NIH), stated, "A single scrubber used in an ordinary household contains more bacteria than the entire human population on Earth."

The research team collected scrubbers and brushes used in 20 Portuguese households and 5 Norwegian households to investigate how many bacteria had proliferated inside. Most European countries use scrubbers, but in Norway and Denmark, the use of brushes is slightly more common than scrubbers.

Luffa

The investigation found no deadly bacteria that cause diseases in either scrubbers or brushes. However, microorganisms such as Salmonella, a major cause of food poisoning, and Moraxella osloensis, which poses an infection risk to people with weakened immune systems, were detected.

Kitchen scrubbers are continuously exposed to moisture and accumulate food residues inside, creating an ideal environment for bacteria to multiply. Especially during hot and humid summer months, bacterial and microbial growth on scrubbers peaks.

The research team stated, "Kitchen scrubbers harbor more bacteria than brushes, and Salmonella and other bacteria grow better on scrubbers than on brushes." This is because scrubbers have many tiny holes.

Dr. Trond Møretrø pointed out, "Not all bacteria are harmful to everyone, but harmful bacteria like Salmonella can spread through hands, kitchen surfaces, and utensils, causing illness."

Additionally, according to research published by the team in the Journal of Applied Microbiology, no significant difference in hygiene was found regardless of how frequently scrubbers were cleaned, rinsed, and dried. Even with the best possible maintenance, the number of bacteria on scrubbers remains high.

Accordingly, the research team recommended using brushes over scrubbers for hygiene reasons. If sponges must be used, they advised replacing kitchen scrubbers every 1 to 2 weeks.

They also added that cleaning scrubbers with bleach or vinegar can extend their usable life but only slightly delays bacterial growth, and when choosing scrubbers, thinner products should be selected.

This content was produced with the assistance of AI translation services.