My male kitty, who spends LOTS of supervised (by DH) time outdoors has never, ever pooped or pee'd outside. He will ALWAYS wait to come indoors to use the litterbox. And there are plenty of spots where he could 'go'...he just doesn't seem to like doing it outdoors. I guess he is well-trained and must think that going potty outdoors is for "uncivilized" cats.