Research documented at Linux Pipeline showed that ClamAV did a lot better at responding to new viruses than any of the paid for apps
, which is pretty cool.
I have tried WinPooch and ClamWin on my PC. Gave up after a week. It gave so many warnings when I ran anything that I couldn't tell what was legitimate and what was nasty. Too many false positives means you end up ignoring all warnings. The lack of documentation just had me scratching my head. It seems to me that WinPooch does much the same as Spybot's TeaTimer, but a lot more intrusive. Can't really say whether the on-access av scanning worked. I didn't find much to have faith in with WinPooch.
Shame as ClamAV would clearly be the best option if only it did on access scanning. Who can rely on on-demand scans in these days of 500Gb hard drives anyway?