I have specks of dust on my Zf sensor that the rocket blower and in body sensor cleaning are not working to remove.

This situation is very stressful for me. I am located in southern West Virginia. Are there any reputable service locations within a 2-3 hour radius of me? I would prefer to take it in somewhere for a same day cleaning rather than have to mail my only really nice camera body away for weeks or months if I can avoid that.
Thanks in advance for your help, this situation is making me very sad. I try to take very good care of my things but made an error here apparently. (No abuse. Just standard lens changes, indoors whenever possible).