How do I stop my neighbors from feeding the animals?

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I live in a condo complex, and my neighbors are constantly throwing food out into the wooded area behind the condos to feed the animals - the racoons, skunks and coyotes that we see from time to time. I've only been able to catch my neighbors at this a couple of times, but I want it to stop. I have a small, elderly dachshund that I have to walk. It's dangerous for her to eat this rotten food that people throw out, and its even more dangerous to take her outside with racoons and coyotes prowling about the complex. Any ideas on how I can stop the neighbors from feeding the wildlife? Has anyone had a similar experience? If I can't get them to stop, how can I keep my dog safe?