Apple Cider Vinegar is very good for Chickens, put it in their drinking water containers daily, it helps keep the water Algae free and from becoming slimy, its good for them health wise as well. I even wash out their containers with it instead of using soap, it keeps hard water from calcification build up in the containers. Do NOT use it in or on anything metal, it cause it to rust almost overnight. I even add to it my ducks bathing water to keep the oils and mud from adhering to the kiddo pool. It makes them much easier to clean and the dirty water smells much better.
