Cleaning chemicals or other toxic substances unlabeled or stored where they can reach food.
Missing consumer advisory for raw or undercooked items, ready-to-eat food not date-marked, or food not properly labeled.
Scoops and other in-use utensils stored improperly (e.g. handle down in the food).
Surfaces that touch food — cutting boards, ice bins, dish racks — soiled or not sanitized.