I only sell in North America so I wanted to block all other IP from store. Set up rules for US and Canada. Used a VPN to try to access my store from various countries around the world and found that several got through to site anyway.
Program seems easy to set up and has some nice features but I just don't have the time or desire to fine tune it, should just work with the rules system available.
Update: Traffic Guard support has been active in checking out my situation and looking into the issues I had with my original installation. The company seems very responsive and extremely interested in helping solve issues. I'm increasing my review to 4 stars due to their willingness "make things right" and ensure their product performs as expected on my web site.
I'm willing to try the program again and will update later after using the app for a couple of months.