The horrendous smell and sight quickly gained notoriety when a Reddit user posted a screen shot of a report made to San Francisco's Citizen app for identifying crimes.
"Twenty pounds of feces dumped onto sidewalk," the report called out.
Nancy Alfaro, a spokesperson for 311, says three reports of the human waste at the corner of Cedar and Polk were made to the city's customer service number and app on Saturday.
"The customers did report a large amount of waste," Alfaro says. "It was sent to Public Works."
San Francisco Mayor Mark Farrell announced a plan to pick dirty needles off the streets.
Media: KTVU
Alfaro says while reports of human waste are common, this large of an amount is "not typical."
She "has no idea" why the bag was left in the neighborhood.