Use people who have something to gain, not people with nothing to lose.
More African Proverbs:
A hammer does not work with iron.African
The fish starts to rot from the head.
African
When a chick ignores its mother's warning, the eagle grasps it for a meal.
African
He who has no pond must not breed crocodiles.
African
Only a well-taught groom deserves a bride.
African
It is not the things in the soup that I am afraid of but perhaps the person I am eating with.
African