I always just 'drugged' to the trash. And as far as I can tell the entire file is gone, including doing a look see at the volume in terminal. It appears that nothing got left behind. That said, I have never done an 'uninstall' unless the application in question came with an uninstaller.
Rick
molṑn labe'
"I am a mortal enemy to arbitrary government and unlimited power. I am naturally very jealous for the rights and liberties of my country, and the least encroachment of those invaluable privileges is apt to make my blood boil."
--Ben Franklin