So I found this article a few days: http://www.achickandhergarden.com/chickens-water-from-freezing/ In the article the author fills 20 oz bottles with salt water and puts them inside her waterers to keep them from freezing. I'm skeptical that this would actually work, but its a great idea if it does. I think I might try this during the cold snap that is supposed to hit here later this week. Has anyone else tried this? Does it work well?