Outdoor trash cans are essential for maintaining clean public spaces, but their noise during use can be disruptive. To reduce noise, designers can implement several strategies. First, using sound-absorbing materials like rubber or dense plastics for lids and liners can dampen impact sounds. Second, incorporating soft-close mechanisms or hydraulic hinges ensures lids close quietly. Third, optimizing the bin's shape—such as adding baffles or internal partitions—can minimize echoing from dropped items. Additionally, placing trash cans on vibration-absorbing pads or rubber feet reduces rattling. Finally, regular maintenance, like lubricating hinges, ensures long-term quiet operation. By combining these approaches, outdoor trash cans can operate more quietly, enhancing urban comfort.