well, I haven't cleaned the yard in over a month now thanks to a few squirts of windex. I just spray windex around the outside of the garbage bag before I put it out and the animals don't go near it. I tried this on the hopes that the strong ammonia smell from windex would make animals think there was a big animal around or maybe cover the smell of the garbage. I have no idea if this is why it works but the animals haven't touched it since I started spraying.
hope this helps other frustrated people.......and I hope it works for you as well as it worked for me.