Cleanup eliminates threats on your computer by doing one of the following:
When Sophos Anti-Virus automatically cleans up items that contain virus/spyware, it will delete any items that are purely malware and will try to disinfect any items that have been infected. These disinfected files should be considered permanently damaged, as the virus scanner cannot know what the file contained before it was damaged.
Cleaning up documents does not repair any side-effects of the virus/spyware in the document. See Get cleanup information to find out how to view details on the Sophos website of the virus/spyware’s side-effects.
Cleaning up programs should be used only as a temporary measure. You should subsequently replace cleaned programs from the original disks or a clean backup.
Cleanup is not required for threats that are detected by web page scanning, because the threats are not downloaded to your computer.