A deodorizer device (10) is suspended over the side of the tank of a flushing toilet. The device (10) has a housing (12) supporting a cartridge of deodorizer material (22). The device contains a battery powered fan (32) and a water level sensor consisting of a pair of electrodes (146) which hang over the side of the tank and into the water. When the toilet is flushed the drop in water level is sensed and the fan (32) energized. This has the effect of vaporizing some of the deodorizer material (22).
