Black spot on viewfinder

[gastroboy]

Hi guys

just got a 20D and have noticed that there is a black smudge (its a littl smaller than the af points) when i look through the viewfinder. Its just off to the left of the main AF points. It doesn't seem to appear in pictures that i have taken so far...anyone know how to get rid of it.?

[ssim]

It could be just a dust spec on the viewfinder glass. I'd try just a blower like the rocket blower to try and dislodge it.

[CRE@TE]

...or a speck of dust on the mirror behind the lense.

[gastroboy]

yeah, it was a little dust spec....didn't have a blower so i used a cotton but and tapped it. (the viewfinder glass inside the housing). P.s can you buy any blower or are some better then others?