A simple tool that can help clean up a Visual Studio solution that scans directories passed as arguments for 'bin' and 'obj' directories and removes them.
It will scan the directory tree and any 'bin' and 'obj' folders that are in the same directory as a '.csproj' file and attempt to delete.
From the command line:
C:\path-to\RepoCleaner.exe "c:\my-repos-folder"
Within visual studio
Debug|RepoCleaner Debug Properties|Command line arguments
Here's a screenshot of it after a run.