Smell
It clumps well but it does 0 for odor control. The cats smell, the house smells, and the letterbox smells. I have a litter robot so the poo and pee does not just sit there, 3 minutes and it's cleaned. It appears as though the entire litter retains the smell of the pee and poo even after it's cleaned and it spreads all over. I'm going back to the multiple cats one, it's amazing, never using this again.