A sanitizing cabinet system includes ozone distribution passaging in open fluid communication with a sanitizing compartment inside a cabinet. An ozone generator and a sanitizing air mover are located in the ozone distribution passaging. The sanitizing air mover moves air from the sanitizing compartment across the generator to form ozonated air and moves the ozonated air from the ozone distribution passaging into the sanitizing compartment. A control system controls the ozone generator and air mover based on feedback from an ozone sensor indicating ozone exposure over time. An ozone conversion device is mounted on a dividing wall of the cabinet outside the sanitizing compartment. The dividing wall has inlet and outlet holes, and the ozone conversion device has upstream and downstream chambers in communication with the inlet and outlet holes. Selectively openable dampers separate upstream and downstream chambers from an ozone conversion chamber in which ozone conversion catalyst is received.