Of all the claims made by San Francisco’s detractors, possibly the most puzzling to people who actually live in the Bay Area is the “poop map.”

“The city now offers people poop maps so they can avoid surprises,” contends one online commenter on a recent story at this website about people moving out of San Francisco. Yet one could canvass the likely distribution points — the airport, BART stations, Pier 39 — and fail to come up with such a document. Is it real?

Here’s the story:

In November 2014, web developer Jennifer Wong won a hack week contest at her job with Human Wasteland, an interactive map that plotted locations of feces reported to San Francisco’s street cleaners. It got mentions from some local media — the Bold Italic called it “playful” — and that was that, for a while.

But around the end of 2016, it started getting coverage of a different sort, as politically conservative media used it in condemnation of San Francisco.

RedState.com called the map an “overwhelming indictment of California’s approach to homelessness and lawlessness.” (RedState also incorrectly claimed that a hepatitis A outbreak in San Francisco prompted the governor’s declaration of a state of emergency.)

Last month, Rush Limbaugh repeated the error that Human Wasteland was an official city project and added of the homeless: “They have to go, and nobody’s told them they can’t! It’s liberalism! What do you expect?”

Such mentions spurred Wong to add a prominent note to the top of the Human Wasteland webpage: “I am tired of people and publications using this map in ways it was not meant to be used,” it reads. “I created this map to bring attention to the issue of homelessness. Not to insult people or places. Not to further political agendas unrelated to homelessness. Not to track anything. Not because it was necessary.”

She goes on to encourage people to educate themselves about homelessness and to donate to organizations that help the homeless, including Lava Mae, which converts buses into mobile showers and toilets.