Does Anyone Use Lighthouse Vibration Cleaner?

I think NGC has a cleaning service, you could try them.

I'm most bothered by the fact that this stuff is being sold without any numismatic caveat whatsoever regarding the incredibly subtle qualifications for using any of it. Had the OP not been wise enough to post his thoughts here, he might think that removing dirt from a coin made sense regardless of the conditions of the individual coin.

We all know that a dirty coin isn't good, but removing that dirt will lead to a coin which is only partially "clean" and therefore destroyed since the fact that it's been cleaned will be so transparently obvious as a result. Yes, in certain narrow circumstances stuff like this is recommended, but that might change between two near-identical coins of the same date and denomination.