San Francisco is known for its Golden Gate Bridge, world class cuisine, panoply of cultures, striking skyline, frigid fog, and homeless. More specifically, aggressive panhandling and homeless defecating and urinating in public. And sometimes doing even worse things.

With the holiday shopping season coming, and Super Bowl 50 right behind, the city by the bay will be in the national spotlight once again, and so will images like those above.

While Mayor Ed Lee announced this week that "the homeless must leave the street" for Super Bowl 50, it's more what they leave behind on the street that is a concern for the million or so people who have to walk a few blocks or a few miles in the city every day.

"We'll give you an alternative," Lee said when he was asked whether the sidewalk sleepers will have to go before San Francisco plays host to the thousands in town for the Super Bowl in February. "We are always going to be supportive. But you are going to have to leave the street. Not just because it is illegal, but because it is dangerous."

The idea is to house street campers either in the city's new Navigation Center in the Mission District — where people can live while they are routed into housing, rehabilitation, employment and other services — or in an estimated 500 units of supportive housing the mayor hopes to have rehabbed and open by the end of the year.

"Some of them are mentally ill. Some of them have severe drug addiction," Lee said of those sleeping on the street. "They get cleaned up for 24 hours, and then they are back on the environment that caused this in the first place."

Mayoral candidate and comedian Stuart Schuffman aka "Broke Ass Stuart" has a solution to the excretion problem, and it actually makes sense. "Free to pee" signs in business, incentivized by tax breaks. And he's got a few more ideas in the video.