Researchers suggest a regular replacement of dish sponges on a weekly basis. Used dish sponges are bacterial hot spots. Their inner surface is extremely large due to the numerous pores offering microorganisms plenty of room to grow.People believe that boiling or microwave treatment reduces the bacterial load in sponges. Quite the contrary, these sanitation methods can actually increase the concentration of the Moraxella osloensis bacterium, that is assumed to be responsible for the bad kitchen sponge smell, as shown by Professor Markus Egert and his researchers. Our Fischnetz with Benefits, on the contrary, do not hold bacteria as they do not act as a reservoir for microorganisms. Therefore they can be used for many years.