Perfect. I think it is an interesting thread comparing various maintenance apps for cache clearing. So, the consensus is to recommend TinkerTool System at least for this particular task. It also shows that other apps claiming to do the same thing fail to do it right. Always good to know. Thanks, kevs, for bringing this up.

Alex
3.1 GHz 13" MacBook Pro 2015, 8 GB RAM, OS 10.11.2, Office 2011, TimeWarner Cable
2.8 GHz Xeon Mac Pro 2010, 16 GB RAM, OS 10.11.2, Office 2011, LAN