SVN - cleaning up local folders
When using TortoiseSVN client on Windows, the 'Clean up' command shown in Figure 1 below does not always succeed in removing the '.svn' folders from all directories and sub-directories. A light and free tool called 'SVN Cleaner' is available at: http://code.google.com/p/svn-cleaner/. That tool adds three context-menu items (red box in the same figure). The items are self descriptive. Right-clicking the folder of interest and selecting the second item does the job for you.
Hope this makes the life of somebody easier ...
Fig.1: Clean up command provided by TortoiseSVN