I've had my Cat Genie for a month and I am already buying another box of litter. (I've only got 1 cat and the litter is below the maximum line in the bowl). They do track all over, but what can you expect with a cat. The product is awesome, I just believe that after purchasing the device, the litter wasn't so costly. Reducing the cost $5 - 10 bucks, I believe would reduce the "burn" of purchasing more litter.