Just noticed this as I was looking for a solution for a different WSUS problem and thought I would share this here as well.  http://gallery.technet.microsoft.com/ScriptCenter/en-us/90ca6976-d441-4a10-89b0-30a7103d55db Apparently a “Thomas Schlacter” posted this recently to the ScriptCenter and looks very convenient in that you would only need to schedule this on the master server and it would parse your downstream servers and remotely issue the calls to run the cleanup on those systems so that you do not have to schedule anything there.  You would need powershell for this to work on the Upstream/Master server.