It must be made clear that you have to have some knowledge in order to use FreeFixer, given that this program doesn't work automatically, but rather simply acts as a system clean-up assistant, leaving the final decision whether to delete a file or not, cookies, registry values, etc. in the hands of the user.
The first thing that FreeFixer will do is analyze your computer in depth, displaying the results as an extensive list with all the potentially harmful elements (spyware, adware, trojans, and other types of malware) that are installed in the areas where these kinds of programs are typically located.
Once you have the results, it will be your decision to delete them or not. You can always consult the FreeFixer database for help, which will give you all the information relevant to each suspicious element that has been inspected by other users. This allows you to view a useful statistic on each update that each of the items have had (whether it was deleted or not).