application changes windows host file.
1. Downland and Run the application as Administrator, no need to install.
2. The most important thing to do FIRST is to choose option 1 and press enter.
3. To block facebook press 2 now check it by pressing number 5 and press enter.
4. To recover facebook back press 3 and restart your browser then check if it works,if it still does not work press F5 in the browser window to refresh.