"I strongly suggest you to not mess with your camera sensor. If too much dust or oil spots (for cameras with mechanical shutters) gets on your CCD take your camera to a qualified service center. Never blow with your mouth into the camera, never use a tissue to clean. Even using a cleaning kit can be dangerous. Sometimes too much cleaning fluid can stain your filter surface. Too few and you can scratch it. I take no responsabilities for any damage you can do to your camera. Sensor cleaning should be done to qualified personnel autorized by your camera makers. Any damage done to your sensor while cleaning can invalidate your warranty."