You can first click “select all”, then click “clean” and all the files will be cleaned.If you want to know details of the file,you can click the “+” character as shown below:

  

and the file will be opened and shown as below:

You can choose the file you want to clean,then click “clean” and the files will be cleaned.

Benefits:You can remove and fix currupted files to slim your computer system and get more disk space.You can also get better computer performance and a faster computer.