Thank you ALL! Just one more thing, here in AZ if you take a feral to the Humane Society they are immediatley put down. They consider them unadoptable and destroy them. If you can find a place in a no-kill shelter, and ones that will work with ferals, then there may be a chance. That's why we TNR and maintain a colony by feeding and providing shelter and water. This can also work in the city as long as someone can feed. The best way to think on TNR is you're preventing producing and more cats living in the same environment. You're not destroying the existing ones, you're preventing reproduction, feeding and just helping them live a little better life!