Food held, cooled, cooked, or reheated outside safe temperatures, letting dangerous bacteria multiply.
Sewage or wastewater not disposed of properly — backups can contaminate the whole kitchen.
Shelves, counters, handles, or equipment exteriors soiled with grease, debris, or dust.
Floors, walls, ceilings, or attached equipment dirty, damaged, or poorly vented.
The establishment's license expired, not obtained, or not properly displayed.