An environmentally-friendly, portable waterless toilet for mobile environments that is provides a single-action pedal mechanism to close the lid, advance a continuous bag with waste, and seal the waste in the bag. The toilet uses a continuous bag supply having a predetermined single dose or portion of at least one chemical automatically deposited therein, the at least one chemical functional to kill pathogens in waste that is deposited through an opening in the seat and a corresponding opening of the continuous bag supply. The waste-filled continuous bag supply is at least temporarily sealed by activation of a mechanical sealing mechanism, and released downwardly into a base section, which is connected to a sitting unit, forming an integral, closed system for waterless sanitation.