Can't get my sensor clean

[Bruja]

I've got a 30D and I can't get my sensor clean. Each time I try it just gets worse!! I've tried with the blower, the brush then the blower, but it's getting worse. What can I do?

 

[stevewestern]

How come it is dirty ?
You sure it is the sensor, and not dust on the mirror ?
I have some cleaning swabs if you can wait a few days..

 

[Bruja]

How would dust on the mirror translate to the image? Every pic of the sky I've taken today has noise in the bottom left quarter. Just taken a few of white card after 2 cleanings and it is worse!

 

[stevewestern]

Just sent you a PM, before I read your reply here...
You say noise - can you show us ?