Cleaning chemicals or other toxic substances unlabeled or stored where they can reach food.
Water not safe, or hot (100°F) and cold water not available under pressure.
Scoops and other in-use utensils stored improperly (e.g. handle down in the food).
Dirty wiping cloths not stored in sanitizer, or soiled linens handled improperly.
Single-use items (cups, straws, to-go containers) stored or handled improperly.
Garbage overflowing or uncovered, or the premises not maintained.