I use 3/4 of the Worlds Best and 1/4 Feline Pine. I love them because they are flushable, and I just scoop and flush in our basement bathroom. It's all natural and it's better for the environment. I have not noticed any pee smell whatsoever, not even when I have my head right up to the enterance of the hooded kitty box (even when there is a fresh pee pee in it, before I scoop). I can smell Min's poo's, but he simply does not cover them, regardless of the type of litter I use. He digs a hole and then drops the turds, and then walks out . So I do smell his ripe stinkies, but I think that I'll smell them regardless of the litter, since he rarely coveres them up. Silly boy

I do really like the litters, though, and I like that it's so easy to scoop, flushable, environmentally friendly, safe, and dust free.