StovePipeCat's Awesome Almost Invisible Cat Litter (18 pounds) Your cat box will not smell for weeks even with as little as 1" of litter. REALLY! Urine odor is neutralized in under 30 seconds. Solids are dried out like beef jerky and do not smell even if not buried. Each 9 pound bag provides 10 - 12 weeks of litter for 1 cat or 3 - 4 weeks for 3 cats. Virtually dust free and minimally tracking. You will NEVER see footprints or need to scrape the bottom of the tray. Simple maintenance saves you time! Our product is 44% lighter than clay and our bags have strong built-in handles that make carrying and pouring easy. Your cat will love the totally unscented, sand-like particles. You will love your odor-free home and the labor savings that Almost Invisible Cat Litter provides.