Nature’s Miracle Premium Clumping Corn Cob Litter, 10 Pounds, Made With Real Corn Cob For Fast-Clumping Litter For Multi-Cat Households

I personally use this: https://a.co/d/076WEGzp Also I got an automatic litter box that connects to my partner's phone. He tells it to cycle at least twice a day, usually more, when he knows the cats aren't in it. Just be careful if you go that route and do some research because some of them are dangerous.