The city’s first-ever “rat czar” quietly scurried away from her post last week with the war on rats still raging, the mayor’s office confirmed to THE CITY Tuesday. Prior to being put in charge of reducing the rat population, Corradi served as the Department of Education’s director of space planning for Queens. While Adams announced her arrival with much fanfare, Corradi barely made a peep as she exited her top role in the mayor’s war on rats. Sliwa criticized the very existence of a rat czar within the city bureaucracy. NYCHA put up posters in East Harlem’s Washington Houses asking residents to help keep trash away from rats.