Susan, there are lots of places besides HD who sell it. Or you can order it online. I first found out about it in one of those gardening supply catalogs & ordered it from them as I had not seen any in stores. That was years ago.
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others. ~~ Sharon Brown