And experts agree with O’Hanlon, the microwave method is one of the most effective processes that can help you kill about 99.9 percent of germs.
According to a study published in Scientific Reports, there are hundreds of types of bacteria in your sponge. “We found 362 different species of bacteria, and locally, the density of bacteria reached up to 45 billion per square centimeter,” explained Markus Egert, a microbiologist at Furtwangen University in Germany, and the person who led the study. “That’s a very huge number of bacteria, indeed. There’s hardly any habitat on Earth where you’ll find similar densities of bacteria, except for the human intestinal tract.”
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