Thanks for the reply. I am a DSLR user. I shoot with Canon 7D and use the Nikon D40X as my backup. I thought the LCC tool you mentioned is for medium backs. My Canon 7D is weather-sealed; however sometimes the dust goes in when I am changing lenses. Even with the built-in sensor cleaner when turning-on and turning-off, sensor dust is annoying! I have used swabs and the magnetic Visible Dust tools to clean at the hardware level.