Litter cost is an expense of having an indoor cat so the inexpensive litter is fine if changed every day. It still costs less then buying the expensive one and trying to make it last. Why not use a litter box with the high dome top? It keeps the litter from going everywhere. When I had my cat I had two of them One to clean every day ready for the next day. I always had a clean litter box ready to change out. A litter box smells if not cleaned everyday no matter what type of litter you use. A litter box is basically a chamber pot and those were cleaned every morning.