If you use the original CatGenie 60 Self-Cleaning Litter Box or the CatGenie 120 Self-Cleaning Litter Box for a maintenance-free, odor-free, and germ-free cat environment, you'll need to replace its Washable Granules every four to six months. These cat-sa
Each box of replacement granules will last 4-6 months in Cat Genie Litter Box
Biodegradable materials degrade in septic systems within 9 months
Works with the CatGenie 60 and CatGenie 120 self-cleaning litter boxes