AVG has spyware built it.
I also use CCleaner to clean my computer ...
http://www.ccleaner.com/
If you set it to clean cookies ... But keep any you might need with passwords ..
It will remove most of what Adaware and Spybot will detect as spyware ... and do it a lot faster.
I may occasionally scan for spyware with ...
http://www.superantispyware.com/ ... But never find any