At the bus terminal, you can exchange your PET bottles (up to 3-liter bottles) for 2 cents. 15 bottles will pay for a single bus fare around the city. The machine accepts national and international bottles. The machine can hold 1200 compressed bottles before it needs to be emptied. This scheme has proven so successful, with individuals of all social classes. Tritubot effectively has added value and an incentive to recycle PET bottles.