Hey guys I have a canon 20D and I realised when I looked through the lens I could see 2 dust specs. I cleaned the lens, they are still there. So I bought a mini rubber blower thing that you squeeze air with. After further inspection I realised that the sensor was clean but the mirror had the dust on it. I used the rubber blower and successfully removed one of the pieces of dirt, but one of the pieces is still lodged on the mirror. What can I use to dislodge the dirt of the mirror? Im unsure what would be safe to use on the mirror. Thanks in advance.