
The kitchen sponge may well be the biggest culprit for harboring bacteria in one’s home. Although it’s true the world is full of bacteria, the sheer concentration of bacteria found in a commonly used kitchen sponge can be shocking. Based on a new study from a team of German researchers, their estimates show that a sugar-cube sized piece of the most bacteria-dense part of the sponge would have 54 billion bacterial cells. Feel free to scream, Germophobes.