i have 6 2 week old chicks that have had no treats yet. I have heard a lot about yogurt so i thought i would try that. Is there a certain kind? Will it be messy? and can i even give them yogurt at 2 weeks old. more info: i have grit in my house, but it's not in their brooder or available to them. They are eating dumor chick starter. They have pine shaving bedding. Hope this background info helps!