I have a big bag from the feed store. It is a Manna Pro product and it says Poultry Grit. It is Granite and has different sizes to it.I assume I would get grit at my local feed store...what is it called? Just 'grit'? How much should I get & how much should I give to them?
The bag will last me more than a year.
The Grit helps with egg shell hardness too.