In order to keep your floors, air, pet and the environment in unity, stove pellets in my opinion, would be the solution. Not only do they have excellent absorbtion qualities, they also keep the odor at a comfortable level over a 5 day period. Pine sap should help in eliminating the smell. Disposal of matter is simple, into the rubbish bin using bio-degradable bags. In my case I would dispose of them in my field and in a matter of weeks, depending on the precipitation, they would disintegrate rapidly and safe into the ground. With the unlimited supply of natural beetle-killed timber and the low cost to the consumer, it has the potential for replacing kitty litter.