Abstract: An elongated perforated cylindrical housing sleeve is partitioned at its center thereby dividing the sleeve into a pair of separate equally dimensioned chambers. A pair of deodorizing units are mounted in the housing sleeve each in a corresponding one of the chambers thereof. A pair of cover caps are threadedly coupled to the housing sleeve at corresponding ends thereof for facilitating replacement of deodorizing units in the chambers. The sleeve is mounted on a supporting surface. A cylindrical cover sleeve having a length equal to half the length of the housing sleeve is slidably mounted on the housing sleeve. Thus, the cover sleeve covers one of the chambers of the housing sleeve while freeing the other so that the deodorizing unit in the one of the chambers is preserved while the deodorizing unit in the other of the chambers deodorizes the surrounding area.