Every parent should have a Mussar or Chasidos sefer on the Shabbos table and learn something from it each meal with the family.
Teaching midos and honesty is our prime responsibity as parents.
This also applies towards non Jews because of Hilu HaShem and so that we don’t train our souls to sin. Hilu HaShem is one of the worst sins and there is no atonement for it.
We are role models to our family and they learn by our actions, the way we talk and interact with other people, Jews as well as non Jews.
We must realize that DISHONESTY will not bring any blessing to ourselves, our children and family.