here are my 2 cents for the people who ask me for advice. dont clean our coins its not worth it. leave it to the experts. its not worth taking a chance to ruin them. Dru and i disagree completely on this. The way you dont fly a plane you sit in, the same way you dont clean coins you own. Do the smart thing dont buy problem coins that need cleaning. If you inherit a collection of problem coins and you know nothing about coins talk to an expert on cleaning here and if you are not interested in learning then get rid of the coins.
As much as we would like to think everyone is a super specialized cleaning expert on coins we are not and neither do we need to be to enjoy the hobby. Be safe be smart avoid problem coins and store them properly so they dont develop problems and if you feel like being Dilton Doiley experiment on cheap coins first or read Dr Spock.