You can also remove the disc without special tools and without dismantling the valve

Kit- Terreon Graphite Replacement Part

Torque: 9 ft-lb

Bradley 140-189Lh Ped

Freshwave IAQ Surface and Air Deodorants, Pail, 5 gal, Unscented - 548 Nominal Size-18" X 1.5" You can also remove theItem Surface and Air Deodorants: Odor Eliminator; Fragrance: Unscented; Cleaner Container Type: Pail; Cleaner Container Size: 5 gal; Recommended Dilution: Ready to Use; Color: Clear; Chemicals For Use On: Air; Primary Chemical: None; Ready to Use Concentrated: Ready to Use; Item: Gel Odor Eliminator; Green Certification or Other Recognition: Safer Choice Certified (Meets U. S. EPA Safer Product Standards)