And what is wrong with a good old fashioned fear of discipline or punishment for doing wrong, in this case using inapropriate language?
I do, however, like your mentoring idea.
The problem I have with the "fear of discipline" tactic is that it's only temporary. Once the adults leave the area, the children are back to immoral behavior.
How about it...it worked for me, my brother, and 2 sisters....we never needed "counseling" because of it. Sometimes I think people will make all the excuses in the world to not feel guilt for things they know in their heart they have done wrong. Doing the right thing is not always the easiest thing.