Left: Water production rate against time of a nucleus where the dust dragging efficiency is reduced from the reference value to 1. This represents the behavior of water production rates when dust mantle is forced. Right: Water production rate against time of a nucleus with a monodisperse distribution of small particles (Distribution 3 in Table 2), which represents the behavior of water production rates when there is no dust mantling. In both cases, the rest of parameters are the same as those presented in Table 3.