Hi Pam. It's nice to see you posting again. Ever since my cats have been eating a high protein grain free diet, their stools have been much stinkier. I now have 2 males and 2 females and no I don't notice any difference in the smell factor. They all produce stinky stools. I prefer to use unscented scoopable litter but I've been having a problem with odor control. Hopefully some day I'll be able to find one that really works well. Just tonight I came home to a very stinky home and I scoop 2 times a day.