my cat kenji is a 14 pound male with stinky number twos. He some times buries and others don't but even when he does it just smells like you walked into a college dorm boys bathroom. Right now I use the fresh step I had to get more yesterday but they only had the 14 pound box and i get the 20 pound cause his litter box is bigger then most. What litter would be good for his stink? I thought about getting tidy cats cause it has bigger sand but then i thought he would play with it more cause he likes to pee near the lip of his box and litter flies out.