FWIW, I generally find that using the Add/Remove programs method of uninstalling isn't enough for antiviruses, so I always refer to the uninstaller tools.
[rant on]
Especially true with Norton - the biggest most egregious offender, IMO. And while I fully understand anti-malware programs must dig deep and set deep hooks, I personally feel it is poor, lazy, mismanaged programming when the program's own uninstaller routine, whether activated via the Control Panel applet or by a shortcut provided by the program, fails to
totally remove the program from our systems. And I find it particularly
offensive when these so-called "good guy" security programs leave services, not just installed, but "started" and running after (supposedly successfully) uninstalling the program. :censored2: :censored2: :censored2:
I don't mind if it takes a reboot to fully remove the final hooks and remnants, but then I expect
no traces to be left behind after that. Particularly, nothing running! :shame2:
Norton is so egregious (and has been for
decades 
), that I feel their
Norton Removal Tool claims that it is for
failed "installs" and "damaged" Norton products is simply PR hogwash. It is marketing weenie speak. The tool should be bundled with every Norton product, IMO.
That said, I do prefer and recommend using a program's own uninstaller (or the via the Control Panel), then use Revo or the Norton Removal Tool (or both - and CCleaner too) to clear out the flotsam and jetsam left behind.
I also REALLY dislike how a Norton "trial" version comes free, and already installed on many factory built computers, then when the trial period nears the end, the product uses scare tactics to intimidate users into paying a premium to keep protection running. :mad7: And not just a one-time premium payment either.
McAfee is not much better.
In all fairness, both are very effective at keeping your computer secure - but, IMO, at too big a cost - literally and figuratively.
[rant off]
