From personal experience..... Dont just change the behaviour in front of them..... Change it entirely. Otherwise they will see it later and think it is okay to be "two faced". (Sorry... I dont mean to sound harsh... But cant think of a more appropriate word for behaving differently in front of someone than outa sight).
I am dealing with this now with my oldest....
You're so right, and I appreciate the honesty. Plus, if you eliminate the bad behaviors entirely then you don't ever have to worry about slipping up. -Aimee