Ten+ years ago I had to go to the corporate HQ in San Francisco 4 or 5 times a year.
The office building was a four block walk from a BART station, mostly along urine soaked sidewalks.
For a week or so in the summer when the city employee tasked with power washing
that section of sidewalks was, we assumed, on vacation, the stench was overpowering.
I doubt it has gotten better since then.