Actually Mike there is an N of 1 Evidence-based study that does not support your above cleaning comparison. Look up that September 2010 Chest Article. They have culture and medical evidence that isopropyl eliminates any biological effect of atypical mycobacteria and fungi. They blinded brass a brass player with hypersensitivity pneumonitis to see if the horn was the source, with pulmonary functions and everything. The gave the horn standard treatment (as you describe) and isopropyl cleaned above standard treatment. Patient cured with the isopropyl wash. Many other brass players instruments were then cultured., and post isopropyl treated horns had a significant inhabitant of atypicals and fungi growth. Amazing study.
Hi Gary. Yes, I'm familiar with the article. I agree that it's interesting with respect to this one person's hypersensitivity. But it's far from definitive with respect to general cleaning or disinfecting. There was no tissue diagnosis, to confirm cause-and-effect (although I realize there was indirect evidence). The presumed impact was on specific organisms, so it might be a stretch to extrapolate this to the eradication of bacteria and viruses and fungi in general. In fact, they don't say they verified that the mycobacteria were eradicated, only that this one person's symptoms resolved. Also, there was no description of the cleaning method, or discussion on the efficacy of the cleaning method.
We may not agree on the best way to use alcohol-based cleaners. That's okay. But let me emphasize one point from my original post. A person's desire to disinfect their trumpet won't work all that well, if they don't get the grime out of their horn first.