The microwave was one of the next most effective, zapping 99.9% of germs.
Do this by putting the sponge in the microwave, saturating it in water (we used 1/4 cup for scrub sponges and 1/2 cup for cellulose), then heating it on high for one minute (scrub) or two minutes (cellulose).
Are kitchen sponges sanitary?
Yes, your kitchen sponge is a huge and shady nightclub for bacteria. Like a nightclub, regular cleaning may help but many sponge owners don’t seem to be cleaning their sponges adequately. Microwaving or boiling the sponge in the laboratory helped significantly reduce the sheer amount of bacteria.
Does boiling a sponge sanitize it?
Forget the microwave and the dishwasher, and don’t bother boiling it in a pot. There’s only one way to truly disinfect that stinky kitchen sponge—and even then, it will never be clean enough for food prep surfaces again. Sponges.
Does microwaving a kitchen sponge kill bacteria?
The scientists reported that simply microwaving sponges (completely wet, never dry) for two minutes at high power killed or inactivated over 99 percent of pathogens in sponges that had been soaked in a “witch’s brew” of fecal bacteria, viruses, protozoan parasites, and bacterial spores.
Photo in the article by “Wikipedia”