Overview

This episode of *99% Invisible*'s "Service Request" series tackles a deceptively simple question from host Roman Mars: why are there so few trash cans in San Francisco, and why is the city so littered? What unfolds over the course of the episode is a nearly decade-long saga of municipal design, procurement, and behavioral psychology that reveals how something as mundane as a trash can can become a political lightning rod, a Fox News punchline, and a $20,000-per-unit prototype project. The conversation with Rachel Gordon, director of policy and communications at San Francisco Public Works, is patient, self-aware, and occasionally wry, as she walks through the counterintuitive finding that more trash cans do not necessarily mean cleaner streets, and that the real problem isn't design—it's human behavior, illegal dumping, and a city's complicated relationship with its own waste.

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3:43The Trash Can Question and Who Decides

Roman Mars's service request began with a simple observation: after eating a slice of pizza in North Beach, he couldn't find a trash can anywhere nearby. He assumed that the scarcity of bins was a major reason for San Francisco's litter problem. To answer his question, host Delaney Hall brought in Rachel Gordon from San Francisco Public Works, the department responsible for installing and maintaining the city's roughly 3,000 public trash cans.

Gordon explained that the city actually has one of the highest densities of public trash cans for a city its size. Placement is not random: the department prioritizes transit stops, commercial corridors, schools, hospitals, and health centers—places with high foot traffic. Residential areas get fewer cans, though the department does respond to requests from dog walkers. The city also fields requests through 311 and from the Board of Supervisors, San Francisco's equivalent of a city council. But Gordon revealed that the process is not as straightforward as simply adding a can where one is requested. The department checks whether a can has been placed and removed before, sometimes multiple times, and if so, they will not put one back. This was the first hint that trash cans in San Francisco are the subject of ongoing, sometimes contentious, local battles.

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6:05The Mission District Pilot: More Cans, Same Litter

In 2017, Public Works launched a pilot program in the Mission District, a dense commercial corridor, to test whether adding more trash cans would reduce litter. The logic seemed sound: a widely repeated story about Walt Disney claimed he observed visitors carrying trash for about 30 steps before dropping it, so he placed cans every 30 steps at Disneyland. Research has generally supported the idea that visible, well-spaced, and well-maintained trash cans reduce littering.

But the Mission District pilot produced confounding results. Gordon reported that adding cans to every corner and mid-block on 30 blocks made "not that much of a difference." In some spots, litter decreased; in others, it stayed the same; in some, it actually increased. Gordon described watching people stand at a bus stop with a trash can five to ten feet away and drop a candy bar wrapper on the ground. When asked about the psychology behind this, she drew a parallel to hotel maid service: if people know someone will clean up after them, they are less careful. She also noted that some people in nice cars would dump ashtrays and coffee cups onto the curb rather than keep trash in their vehicles, expecting city workers or nonprofits to pick it up. The pilot's key lesson was that trash cans are a convenience, not a solution to littering behavior.

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10:25Different Cultures of Trash

Gordon introduced the idea that there is no universal way trash and trash cans work—there are different "cultures of trash." She pointed to Japan as a striking counterexample. After the 1995 sarin gas attack on the Tokyo subway by the Aum Shinrikyo cult, the country removed public trash cans as a security measure, and they never really came back. Yet Tokyo and other Japanese cities remain spotlessly clean. The cultural norm is that people carry their trash home with them.

Within the United States, Gordon noted that cities like New York, Philadelphia, Baltimore, Chicago, Seattle, and Portland seem to have a different relationship with trash. In those places, more trash cans do appear to correlate with less litter. But San Francisco does not follow that pattern, and Gordon admitted the city does not have a "magic answer" for why. She offered several theories: a higher-than-average unhoused population, some of whom rummage through public bins for recyclables and leave trash scattered; illegal dumping, which accounts for about 18,000 tons of trash on city streets every year, including mattresses, furniture, construction debris, and bagged household garbage; and a scandal-plagued company called Recology, which the city contracts to empty the cans, but which some residents say does not do so frequently enough. There is also a self-reinforcing cycle: studies show that when a space looks clean, people tend to keep it clean, but when it is already dirty, they feel more comfortable adding to the mess.

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13:42The Trash Can Redesign Contest

After the Mission District pilot showed that adding cans did not solve the litter problem, Public Works pivoted to a different strategy: redesigning the cans themselves. The existing "Renaissance" cans had been on the streets since 1993 and were reaching the end of their lifespan. They were also vulnerable to vandalism—people break doors, tag them with graffiti, tip over 600-pound cement cans, and rummage through them. Gordon described the challenge as finding a design that was harder to break into, easier to clean, and had better locking mechanisms.

The city launched a contest, prototyping three custom designs alongside three off-the-shelf models. The custom designs were the "Salt and Pepper," a two-tiered can with separate compartments for bottles and trash; the "Slim Silhouette," a narrow can with stainless steel bars on the outside to discourage graffiti; and the "Soft Square," which had curved panels and a foot pedal. The city then ran a two-and-a-half-month pilot, placing all six models in 52 locations across diverse neighborhoods. The public was invited to scan QR codes on the cans and provide feedback. Thousands of people weighed in, and Gordon noted that San Franciscans are characteristically opinionated about even the smallest design decisions. The cans were also tested by the maintenance crews who empty them and the workers who clean them.

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21:55The Cost, the Criticism, and the Timeline

The redesign process attracted significant media attention, much of it negative. Each prototype cost $20,000, a figure that became a Fox News headline. One supervisor called it "a Fox News headline waiting to happen." Gordon defended the cost by explaining that the city paid for industrial design and manufacturing—not 3D printing—and that the cans needed to withstand the rigors of a public trash can in San Francisco. When the city eventually went to bid for mass manufacturing, the price came in at about $1,375 per can, which is comparable to or slightly less than off-the-shelf models.

But the cost was not the only source of frustration. The entire process—from the initial pilot in 2017 to the expected rollout in summer 2024—took nearly a decade. Gordon acknowledged the criticism, saying, "I think people should hit us on that a little bit." She cited contracting processes, competitive bidding requirements, and the COVID-19 pandemic, which created a two-to-three-year time warp. Even without COVID, the timeline was six years, which host Delaney Hall noted is longer than it takes to build a skyscraper. The city ultimately chose the Slim Silhouette, which was the top choice of both the public and the maintenance crews. The design was tweaked: the opening was enlarged to accommodate cardboard lunchboxes, the exterior ribs were modified for easier cleaning, and the lock was hardened. The manufacturer is now conducting rigorous in-house testing, including what Hall called "a trash can tester" that bangs the cans with everything possible.

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26:04The Politics of Trash and the Behavioral Core

Gordon reflected on why trash and cleanliness have become such charged issues in San Francisco. She acknowledged that the city is a political target—a very blue, Democratic city that has produced national figures like Gavin Newsom, Kamala Harris, and Dianne Feinstein. "It's nice to take a hit at it," she said. But she also emphasized that San Francisco is one of the most beautiful cities in the world, and that its trash problem is on par with many other cities. The real challenge, she argued, is that "there's a constituency for every trash can." Some residents want them; others do not. Public Works must find the right balance.

Hall drew a connection between trash and what is sometimes called "pothole politics"—the idea that basic services like snow removal in the Midwest or pothole repair in the East Coast are the metrics by which residents judge a city's competence. Gordon agreed, noting that Public Works cleans the streets 24 hours a day with specialized operations: manual sweepers, flusher trucks, sweeper trucks, pickup trucks, and about 120 "block sweepers" who work commercial corridors with brooms and dustpans. The department also sends staff into schools to talk to children as young as second graders about proper disposal. But ultimately, Gordon returned to the central insight of the episode: "You can bring people to trash cans, but you cannot make them throw away their trash." The problem is behavioral, not just infrastructural.

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29:04The New Cans and What They Cannot Fix

The new Slim Silhouette cans are finally rolling out in summer 2024, and the episode notes that they look sleek and modern. But Gordon was clear that a better trash can is not a silver bullet. The deeper issues remain: 18,000 tons of illegally dumped garbage per year, people rummaging through bins because they have nowhere else to go, and a culture in which some residents treat the sidewalk as an extension of their own trash service. The new cans are a tool, but they will not fix everything.

The episode concludes by answering Roman's original question. The city's nearly 3,000 trash cans are overseen by San Francisco Public Works, which installs, maintains, and repairs them. Placement prioritizes high-traffic areas and responds to public feedback via 311 and the Board of Supervisors. The department runs pilot programs to test new approaches. And the reason it took nearly a decade and significant public expense to choose a trash can is that the process involved design, prototyping, public input, competitive bidding, and the disruptions of a global pandemic. The answer is thorough, but it also leaves the listener with a sense that the problem is not fully solvable by design alone.

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Conclusion

What stays with the listener is the tension between the simplicity of the question—why is there so much litter?—and the complexity of the answer. The episode matters because it uses a mundane piece of infrastructure to reveal how cities actually work: the slow grind of procurement, the unexpected consequences of well-intentioned pilots, the political weight of basic services, and the stubborn reality that design can only do so much against human behavior. Rachel Gordon's patient, unflappable demeanor throughout the interview underscores a deeper point: the people who maintain our cities are often the ones who understand their problems most clearly, even when they cannot solve them. The new trash cans will help, but the litter will persist, not because the city does not care, but because caring is not the same as fixing.

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Key takeaways

• San Francisco has about 3,000 public trash cans, one of the highest densities for a city its size, but adding more cans in a pilot program did not significantly reduce litter.
• The city's trash problem is driven by illegal dumping (18,000 tons per year), rummaging by unhoused residents, a self-reinforcing cycle where dirty spaces invite more litter, and a culture where some residents treat public cleaning as a free service.
• A nearly decade-long process to redesign the city's trash cans involved prototyping three custom designs and three off-the-shelf models, public voting via QR codes, and testing by maintenance crews.
• The prototypes cost $20,000 each, but the final mass-manufactured cans cost about $1,375, comparable to off-the-shelf models.
• The winning design, the Slim Silhouette, was chosen by both the public and maintenance workers, and features stainless steel bars to discourage graffiti and a hardened lock.
• The timeline stretched from 2017 to 2024 due to contracting processes, competitive bidding, and the COVID-19 pandemic.
• Japan offers a counterexample: after the 1995 sarin gas attack, public trash cans were removed, but cultural norms keep the streets clean.
• The episode's core lesson is that litter is a behavioral problem, not just a design problem, and that better infrastructure is only one part of the solution.