Back in 2002 I was in the hospital for a week because of my blood pressure. After I got out my doctor put me on a diet that consisted of, among other things, oatmeal every morning. In addition to the diet, he ordered that I walk at least thirty minutes a day every day. So, I would eat my oatmeal then take a thirty minute jaunt on the dirt road that runs behind my property. One morning I was about half-way through my walk when the oatmeal caught up to me. I had the irresistible urge to shit. I ran on my tip-toes off the road and into the woods, found the nearest tree, leaned up against it and let it fly. I ran off all the wildlife in that area for at least three weeks, every morning for at least that long, I could smell where I scarred that tree. The flies may love it, but if you want to scare off your cats off, shit outside. They'll be gone until the lingering odor subsides.