Windows and programs keep many entries in the registry that are not important and you may never use, things, like, Most Recently Used lists and History lists.

This tool will empty the most common stashes.  You may also add any entries that you wish by clicking on the Add button.  This displays another window that explains how to add an entry.

To remove an entry from the registry, check it and press the Remove button.  To show the individual items click on the plus symbol next to the section heading.  To check or uncheck all of the items in a section, check or uncheck the checkbox of section heading.  Most of the MRU and History Lists items will be replaced when you use the corresponding program.  Most of the entries in the other sections can only be replaced by reinstalling Windows, so know what you are doing before removing.  If there is any chance that you will use one of them, don't remove it.

 

The "Clean Stash as part of Automated Scans" checkbox lets you include the Stash Vac in the automated scans.