Are the ones that everyone is familiar with, usually colored grey with a basic lock and a couple of screens up top for ventilation. These are a single-unit option that does not include a sink or a flush. They are best used for events that are expected to last only a few hours. This is due to their smaller holding tanks. Regular porta potties don’t offer much in the way of accommodations but they get the job done and due to their lower price point, several of them can easily be rented out at a time. This style of portable toilet is usually seen at construction sites and open-air markets.