That's an excellent and practical question! For a small pedestrian plaza, getting the bin count right is crucial for both cleanliness and budget. There's no one-size-fits-all number, but a great rule of thumb is to start with one bin per every 30-50 feet of primary walking path or seating area.
Think about it this way: people shouldn't have to walk more than a short distance to dispose of litter. If your plaza has benches where people sit to eat lunch, place a bin nearby. High-traffic entrances and exits are also key spots.
Beyond just the number, placement and visibility are everything. Bins should be clearly visible and never hidden in a corner. Consider starting with 2-3 bins for a truly compact space. Observe for a week. Are bins overflowing? Are you seeing litter on the ground near seating? If yes, add another. It's better to start slightly under and adjust based on real use.
Also, opt for bins with simple, open designs—people are less likely to use bins with complicated lids. Pairing a recycling bin next to each trash bin is a smart move if local services allow it. Ultimately, the goal is to make disposal so convenient that littering isn't even a thought. A clean plaza is a welcoming plaza!