At first glance, the granules seem a little pricey. Compared to the cost of an equal amount of the old littler, I can see why. You need to think about how long your litter lasts, though! I calculated my annual litter costs, pre-Cat Genie. The granules and cartridges combined cost roughly 80% what I spent on cat litter annually! Plus, the cats don't make as much of a mess with the granules. We used to have to sweep the entire laundry room 2 -3 times per day. Now, we just sweep in front of the Cat Genie once in the morning. I have the dome, but I had a dome on the old litter box too!