I'm sure others have their own solutions for getting rid of BIN/DBO files, but I thought I'd share mine for ease of use.
Just place this small .exe in your root FPS Creator folder and run it, it will place a small icon in your system tray. At any time, pressing the hotkey "WIN+b" will clean all bin and dbo files, useful for model pack creators and troubleshooting.
It's a nice quick one-handed solution using an easy to reach hotkey. You can also place a shortcut in your Windows startup folder to have it launch automatically when Windows starts.
EDIT:v1.01 Now ignores bin/dbo files in the "MyGames" folder.
EDIT:v1.02 Now displays a brief 'running' message as soon as hotkey is pressed.
EDIT:v1.03 Changed the message boxes to look identical.
SPECS: Windows7 x64, Intel Core i7 920, Geforce GTX 580, 6GB RAM