What type of latrine is most suitable for an extended stay of more than three days?

The deep pit latrine is particularly suited for an extended stay of more than three days because it is designed to handle larger volumes of waste over a longer period. This type of latrine generally has a deeper excavation, which allows for accumulation of waste without frequent maintenance or emptying.

In contrast, other latrine types have limitations that make them less appropriate for longer stays. For example, a burnout latrine, while effective, requires regular removal of ash and may not be practical for extended use. The pail latrine, on the other hand, relies on containers that can become filled quickly and require frequent emptying, making it unsuitable for prolonged use. Similarly, a saddle trench latrine is typically used in more temporary situations and is not designed for extended stays, as it can become full and may cause sanitation issues if not regularly serviced.

Thus, the deep pit latrine offers a practical solution for managing human waste effectively during extended stays, ensuring sanitation is maintained.