Just for the sake of comparison I took the heatsink I just cleaned and applied a dab of Arctic Alumina, Arctic Silver 3, and Arctic Silver 5.

I placed a couple drops on each spot and waited 30 seconds.

With a few quick wipes of the paper towel I had...

A perfectly clean heatsink.  Even with the rather thick dabs of the grease, the cleaner was able to chew right through in a matter of seconds.  While the ArctiClean website's instructions state that you should remove any loose material with a rag or credit card before using the first compound, I found that doesn't really matter if you do it or not.  It seems to do an equally good job either way.

ArctiClean makes cleaning heatsinks easy and idiot proof.  Personally, I will be using it from this point forward.  It's hard to believe that previously I put so much work into doing a task that I can now accomplish in a couple of minutes.  Plus, short of mixing the bottles up (all two of them), there's simply no way anyone could screw it up.