My wife and I left our dog in the backyard while we went out of town for a long weekend. We bought a 5 gallon food and a 5 gallon water dispenser before we left so our dog would have plenty of food. The day after we left, a friend went to check on our dog and said the food was empty. 5 gallons, gone! I know our dog didn't eat it all because she's not a big eater. Our friend filled it with another 5 gallons. Upon our return, I discovered that not only was the feeder empty again, but the back porch was covered in bird feces. The birds ate most of 10 gallons of food. The logical solution is that our dog would chase the birds away. Well, that's not the case. She's not interested at all, and apparently the birds aren't afraid of her. The dog looked as if the birds pooed on her, so I assume they didn't leave her alone while she ate. Does anyone know how to keep the birds away? I don't care about humane/inhumane ways to do it, I just want them gone, never to return. Cat aren't really an option because I'm allergic. Any ideas?