While renting a portable toilet is convenient and affordable, the challenge lies in the proper placement of the toilet. No one wants to cross muddy terrain to access a porta-potty. Also, you don't want service trucks stuck when accessing the toilets. You should balance your customer's wishes and guests' expectations. Here are some pointers on the best placement of portable toilets. Legal Considerations You should obtain a permit if you plan on using portable toilets for your event.