  A theoretical investigation has been made on modulational instability (MI)
and dust-acoustic (DA) rogue waves (DARWs) in a four dusty plasma medium
containing inertial negatively charged massive heavy (light) cold (hot) dust
grains as well as super-thermal electrons and non-thermal ions. The reductive
perturbation method is used to derive the nonlinear Schr\"{o}dinger equation,
and two types of modes, namely fast and slow DA modes, have been observed. The
conditions for the MI and the formation of associated DARWs are found to be
significantly modified by the effects of non-thermality of ions ($\alpha$),
super-thermality of electrons ($\kappa$), density-ratio of non-thermal ion to
cold dust ($\mu_i$), and mass-ratio of cold dust to hot dust ($\sigma$), etc.
The implications of our current investigation in space and laboratory plasmas
are briefly discussed.
