I notice barely anyone mentions Bazooka...
Well, I like it!
I have THE FAMOUS 2 ( you know which ones), spyware blaster, hijack this, spyware guard (any1 getting updates for this???), and CWShredder, along with Bazooka
Bazooka is less than 1 mb, does not take long to download, and is the fastest scanner I've seen so far. (did it take 3 seconds? Maybe less...) With Bazooka, I can scan every few minutes if I wanted (of course I don't though) If it picks something up, but can't remove it, at least you know it's there, and you can get one of your other scanners to try and find it and blow it up.
One of the best French door fridges we've tested