There are very few AV programs that remove EVERYTHING when you use add/remove. Most of them have a special removal tool though, I have never heard of DriveSenty so I don't know if they have one or not. I googled a little and saw that they have a forum so maybe you could check there and find out.
I have been testing security software for some time and recently i tried DriveSentry which i didn't really like so i uninstalled it... But it seems that something went wrong during the uninstallation and windows security center identifies DriveSentry as a Deactivated antivirus program even if it is not present on my system... Can anybody help me out on this please?