that is a great idea I will look into doing that as soon as we are able to get some from the feed store. The feed and scratch I give them is Nutrena brand and so far I haven't had an issue... well until my one hen died but it wasn't from the food, I think she was sick when I got her. I love Zamzows but they can be spendy depending on what you get. My dad buys the feed and helps me with the chickens so D&B is what I am stuck with. The Meridian feed store is a bit messy or at least it was the last couple of times I was there, my dad actually used to work for them when I was small. Your galvanized metal dish does it look kind of like an oil pan? What kind of container do you recommend? They do tend to knock things over, especially their feeder and before I got a 3 gallon heated waterer they were always knocking over their mason jar waterer.I'm not sure how much it is at D&B, we buy the crushed oyster shell from the Meridian Feed Mill since we are usually there buying feed, however I have since switched to Zamzow's feed, the ingredients look exactly the same however the fiber content is much higher in the Zamzow's feed and it is much cleaner also, which was my main reason for switching. Anyways we use a galvanized metal dish that hangs on the side of the wall for the oyster shell, anything should work really if they don't tip it over, that is my reason for having it attached to the wall.