I know why you never find it. Stores usually only stock 3-4 bags at a time. If one of us walks by the shelf, poof, it’s gone. The wife asks, "Why do you need three bags of pickling lime?” I respond with, "The precious needs’s it, (hisssss)".
I have 1.5 bags right now. Next time I see some, it'll get what is there and make a post. We need to keep those pesky canning people from using OUR products.