Arm & Hammer Smoke Buster Ash Tray Fill. Arm & Hammer Ash Tray Fill is a dry, granular powder that is perfect for indoor or out-of-the-weather urns. Because Arm & Hammer Ash Tray fill is baking soda based it absorbs odors from ashes and the surrounding area leaving a clean, fresh environment. Arm & Hammer Ash Tray Fill: Is a bright, white fill material, Is a fill material that truly absorbs offensive odors, Is a pleasant fragrance in an indoor environment, Can be vacuumed without harm to equipment, Can be flushed down the toilet or washed down a drain, Is a fill material that holds your imprint, Sifts easily for complete cleaning and longer life. 42.6oz carton.