The Doctors discuss how your kitchen sponge most likely has more bacteria on it than your toilet seat!
According to a study in Germany, bacteria like staph, salmonella, E. coli, and listeria were found on sponges due to the cleaning item often being warm, moist and filled with places for bacteria to grow.
According to the Good Housekeeping Institute, the best way to clean a sponge is using bleach and water. They suggest mixing 3/4 cup bleach with a gallon of water and soak the sponge for 5 minutes and then rinse.
The Doctors also suggest replacing your sponge every 2 to 3 weeks.