PWD and Philly311 are hoping the video will help 'scare' people away from throwing trash into the sewers.
In the PSA, a young man throws his trash into a city sewer.
That's when a clown pops up to warn him that he's polluting the Philly watershed.
"Now go home and dispose of your trash properly!" the clown says.
RELATED: City of Philadelphia: Don't put greasy pizza boxes in recycling bin
The PSA was posted to social media on Thursday, a day before Stephen King's It hits theaters.
So when it comes to throwing trash in the sewers, Philly311 and PWD says "Don't do IT."
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