Using Hazel to clean up app uninstalling

I've just listened to this weeks Apple Insider Podcast and it was mentioned that Hazel can be used to clean up install files left behind after applications have been uninstalled via deletion in Finder.
I've searched through the forum and Hazel itself and I must be missing something as I can't see any reference to this at all....
So... is this possible, and if so what am I missing. Any assistance appreciated.
I've searched through the forum and Hazel itself and I must be missing something as I can't see any reference to this at all....
So... is this possible, and if so what am I missing. Any assistance appreciated.