To remove .DS_Store files:

To remove all .DS_Store files in your home folder choose Home Clean > Remove .DS_Store Files.

To remove all .DS_Store files in a specific folder, choose Trash > Remove .DS_Store Files In Folder.
The .DS_Store files store Finder-specific preferences concerning the display of each of your folders. Removing these files is an easy way to reset your display preferences. Also, if you’re moving files between your Mac and another operating system such as Windows or Linux these files can cause unexpected problems and should be removed prior to transfer.
To remove all .DS_Store files in your home folder choose Home Clean > Remove .DS_Store Files.
To remove all .DS_Store files in a specific folder, choose Trash > Remove .DS_Store Files In Folder.