To delete all .DS_Store files from subfolders (on macOS), you can use Terminal. Below are the steps to do it safely:

  1. Open Terminal

  2. Navigate to the directory where you want to delete all .DS_Store files.
    For example, if the folder is in Documents, type:

    cd ~/Documents/your-folder-name
    
  3. Run the following command to find and delete all .DS_Store and _.DS_Store files recursively:

    sudo find . -type f \( -name ".DS_Store" -o -name "._.DS_Store" \) -delete -print 2>&1
    
  4. You can also verify the deletion file by running:

    sudo find . -type f \( -name ".DS_Store" -o -name "._.DS_Store" \) -print 2>&1
    

    If nothing is returned, all .DS_Store files are successfully removed.