  The presence of a nonattractive chaotic set, also called chaotic saddle, in
phase space implies the appearance of a finite time kind of chaos that is known
as transient chaos. For a given dynamical system in a certain region of phase
space with transient chaos, trajectories eventually abandon the chaotic region
escaping to an external attractor, if no external intervention is done on the
system. In some situations, this attractor may involve an undesirable behavior,
so the application of a control in the system is necessary to avoid it. Both,
the nonattractive nature of transient chaos and eventually the presence of
noise may hinder this task. Recently, a new method to control chaos called
\emph{partial control} has been developed. The method is based on the existence
of a set, called the safe set, that allows to sustain transient chaos by only
using a small amount of control. The surprising result is that the trajectories
can be controlled by using an amount of control smaller than the amount of
noise affecting it. We present here a broad survey of results of this control
method applied to a wide variety of dynamical systems. We also review here all
the variations of the partial control method that have been developed so far.
In all the cases various systems of different dimensionality are treated in
order to see the potential of this method. We believe that this method is a
step forward in controlling chaos in presence of disturbances.
