a multi function canister mountable within a urinal chamber is held in place by a spring clip that is insertable in one of the flush apertures at the top of the chamber and which biases the canister against the chamber rear wall the canister includes an onboard fragrance tablet that continually dispenses an odor counteracting aroma the canister also includes a reservoir filled with a solid compound a dissolved portion of which is released into the chamber with each flush by water flowing from the aperture in which the spring clip is installed a deflector tray limits the amount of water flowing into the reservoir the dissolved portion inhibits the formation of potassium phosphate scale on the surfaces of the urinal chamber and drainage pipes the solid compound may be sulfamic acid the canister may also include a grill which covers and protects the fragrance tablet application_number US 67916807 A description the invention will now be described with reference to the included drawing figures it is to be understood that the drawings are not necessarily drawn to scale and that they are intended to be merely illustrative referring now to the front view of fig1 the multi purpose canister 100 has.