Worked great for us, but I had to turn it off. Why? Because the IP databases that the two services I was using are not accurate enough and some people in the US were being blocked as if they had a foreign IP address. It happened regularly enough I reluctantly had to turn it off and now I have to deal the non-stop hacking attempts on the website.

For the record, my website is a front end for a local-only business. Absolutely no reason for anyone outside the US to participate.