That's a great question that gets to the heart of practical park management. From my experience visiting and studying urban spaces, there isn't a single perfect answer—it depends heavily on the park's design and usage patterns.
Having many small bins placed frequently along paths and near benches can be highly effective. It caters to the basic principle of convenience; people are less likely to litter if a bin is always within sight. This setup is ideal for high-traffic areas like food courts, playgrounds, or main walkways where snack wrappers and coffee cups accumulate quickly. It reduces visual litter and can improve overall cleanliness perception.
On the other hand, installing fewer, larger centralized bins has its own strong advantages. It can be more cost-effective for maintenance crews, as collecting from fewer points saves time and fuel. These larger stations often allow for proper sorting into recycling, compost, and landfill, promoting sustainability. They work well in larger, more natural sections of a park or in areas with less dense foot traffic.
The most successful parks I've seen often use a hybrid strategy. They deploy numerous small bins in "hotspot" zones where litter is generated rapidly and rely on larger, multi-stream stations at key entrances and exits. The critical factor is consistent and reliable emptying; an overflowing bin, whether small or large, is worse than none at all. Ultimately, the best system is one that matches user behavior, is easy to maintain, and keeps the park enjoyable for everyone.