Street Cleaning Day is an annual event that occurs in Night Vale.

The most important strategy for surviving Street Cleaning Day is to run.  RUN.  FORGET YOUR CHILDREN AND LEAVE BEHIND THE WEAK.  RUN.  Night Vale has contacted those experts who have not already gone underground or changed their identity, and has been told that Street Cleaners focus on heat and movement, and so the best strategy is to be dead already.  If you have doors, lock them.  If you have windows, board them up.  If you still have ears, cover them, and crouch wherever you are.  PLEASE, REMAIN CALM.

Very little is known about it aside from the fact that it is extremely dangerous to living citizens. Common known ways to avoid being eradicated by Street Cleaning Day include: hiding in enclosed areas, leaving Night Vale temporarily, and faking one's own death.