Repelit strives to be very unobtrusive.  If your computer is safe, only the occasional “Blocked Entry” installation reminder or "Threat Counter" lets you know Repelit is working.  If you are blocking entries, the blue “IT” logo in the system tray will blink a yellow and red international “NO” symbol every time it blocks an attempt on an attack point.  Also a translucent threat counter box will slide up from the system tray showing the total number of blocked entries by Repelit.  These are the visual indicators of Repelit protecting your system.