With all the outcry in recent months over the human waste on San Francisco’s streets, you might wonder whether the problem has actually gotten stinkier over the past few years as certain pundits suggest, or whether it’s improved.

To get a clearer view, the above map by William shows where human waste has been reported in San Francisco over the past seven years. With this, you can check any month since mid-2008 and get a snapshot of where human excrement was spotted around the city. This fairly elaborate project was perhaps inspired by SF web developer Jenn Wong’s interactive Human Wasteland map of a couple of years ago.

While there are reports of human waste in several S.F. neighborhoods, it is clear that the blocks in and around the Tenderloin remain the one area where you better be looking down while walking down the street.

This is why S.F. responded in 2014 to the issue with a data-driven solution to the human waste problem: mobile bathroom stations at the Tenderloin’s most used areas.

Has this effort, the Tenderloin Pit Stop, made a difference? You can try to figure it out here. And if you’re wondering where else more public restrooms, or close-toed shoes, are necessary, it will help with that, too.