Tri-Chek feed is based out of Augusta, GA. That is all I have gathered. Has anyone used it? I am in Columbia, SC and getting ready to welcome a flock in my backyard. I have been doing research on the different feed available in Columbia....the common Purina is here. I ran across Tri-Chek laying crumbles and a local feed and seed store, and didn't know if anyone has used it and has any thoughts about it. Maybe you have a different kind of feed that you would recommend...please do so! Your advice is much appreciated!