Hi all: A question for those of you who allow your cats to free range. I know that some folks strongly believe in keeping cats indoors at all times. I'm not addressing those. I have had cats who were content with being purely housecats. But I also have a (neutered) male cat who jumped twice off a second story balcony to get out - and was back that evening limping but happy. Since that time, we put in a cat door to avoid him damaging himself getting out and he comes and goes at will, mostly in our own fenced yard. He's a great mouser and great at keeping the coons and squirrels and other unwanted critters out of our yard. When the neighbor cat comes to "challenge" him, he mostly sits there and ignore him with a look like "yeah, you and what army? Kids nowadays..." He doesn't bother our chickens, but I'm glad he's out there because it's less likely the neighbor cats will bother our chickens either. So, my question is, I'm curious if anyone has found a good way of keeping your cats from going into yards where they are unwanted. I know there are folks who would rather not have a neighbor cat come into their yard. I know there are some folks who want to let their cats outside but don't want them leaving their own yard. Has anyone found any effective ways of doing this? EDIT: My cat easily leaps to the top of our privacy fence and suns himself there - so a "tall fence" isn't the answer.