A lot of Vervets' natural food
sources have been destroyed, causing
them to forage in public places.
They can quite easily become a problem
if they find a constant easy source
of food, which hospitals, hotels,
tea gardens, in fact any open area
where humans tend to throw away
food.
Public areas are probably the most
difficult areas to control when
vervets start troubling people,
due to the fact that you have so
many uncontrollable factors involved.
The main one being the public visiting
these areas and unless you get them
to understand the seriousness of
the problem and that they must not
feed or try to interact with the
monkeys you will never solve the
problem.