Brad Weiser swears that you can use your dishwasher to cook and do laundry. I thought he was crazy until I real this. According to yahoo.com your dishwasher is one of the best allies in keeping your kitchen safe from contaminants? The dishwasher sanitizes everything that goes in it, says Bonnie Richmond, senior lecturer in food safety and sanitation at the Hotel School at Cornell University, if you use the dry cycle. During that cycle, the internal temperature of the dishwasher reaches 170°F, which is required for sanitizing.