Dishwashers collect and clean dishes in restaurants, hotels, and other establishments where food is served. Dishwashers also clean equipment that is used for food preparation and service, such as ovens, ice cream machines, and drink dispensers. Many restaurants have dishwashers working during food prep hours and service. Dishwashers are required to follow food safety and sanitation guidelines to prevent illness contracted through undercooked meats and cross-contamination. They also stack and organize dishes and equipment in their proper place so that they are easily accessible.