Diane, our cats box sit behind the recliners when we are parked. We have two boxes and the other sits near the desk. One thing that we have done, a long time ago, was to go to a product called Feline Pine. It is actually saw dust made into pellets. It has very little dust, does not smell like the clay products, nor does it have the "scented" smell. We scoop daily, and almost never change it. No odors. Very little tracking. Just a food for thought. Our cat does not travel in the Bighorn. He sits on the console between us.
Peace
Dave