Dishcloths are often left damp and provide a breeding ground for bacteria. Since the kitchen sink is used to clean food, dishcloths are routinely infected with E. coli and salmonella. In 2007, a study from the Journal of Environmental Health found that putting a damp dishcloth (or sponge) in the microwave for 2 minutes killed 99% of living pathogens.^[3] However, fire departments have subsequently warned people not to do this as it can be a fire hazard, especially if the dishcloth or sponge is not sufficiently wet. Several small fires have been started as a result of people following the advice from the study.