McDonald's

The wet cloths used to wipe down surfaces weren't being stored in sanitizing solution between uses, allowing bacteria to spread.

The dishwasher or sink used to clean dishes isn't working properly or staff aren't using/testing it correctly to ensure dishes are actually getting sanitized.

The restaurant doesn't have hot and cold running water, or the water pressure is too low.

The restaurant has evidence of insects, rodents, or other animals on the premises.

A food worker was not maintaining adequate personal hygiene, such as wearing dirty clothing or not keeping hair properly restrained.