I have dust on the sensor of my 10D. <p><img src="http://home.hccnet.nl/jesper.de.jong/images/CRW_1371.jpg"> <p>So I've already read some articles about cleaning it. My question is about what cleaning agent I should use to clean it. Can I use lens cleaning fluid that I got in an expensive lens cleaning set? Or do I have to use something else?