Agent for cleaning and/or deodorizing for use in the sanitary field which is used to adhere to a moistened surface of a sanitary object and gradually to dissolve as it is flushed with water, which agent includes a cleaning block including tensides (10), wherein the surface (12) of the cleaning block is sticky, or becomes sticky in the presence of water, wherein the block (10) has on at least one side of its surface (12) a coating (13) of powder particles (14) to a thickness between 5 μm and 800 μm.
