Roaches, rodents, flies, or other pests present — or doors and openings that let them in not protected.
Cleaning chemicals or other toxic substances unlabeled or stored where they can reach food.
Dish machine or sinks not set up or working properly, or missing sanitizer test kit and gauges.
Floors, walls, ceilings, or attached equipment dirty, damaged, or poorly vented.
High-risk food (like meat) thawed improperly, promoting bacterial growth.
Surfaces that touch food — cutting boards, ice bins, dish racks — soiled or not sanitized.