When dining out there are always things to consider: What kind of food are you in the mood for? How's the service? Is the restaurant clean? Technomic (a sister company to Restaurant Business) surveyed hundreds of diners from quick-service and sit-down chain restaurants to find out which establishments scored the highest for overall cleanliness (on a scale of 0 to 100). The overall score is based on the restaurant’s interior, restrooms, and kitchen area.