Disc-integrated and normalized production rates of s ≤ 10 μm dust as a function of target and projectile sizes. These maps are estimated, at collisional steady-state, for the “control runs” where the s_surf criteria is turned off. This allows for an easy comparison with Fig. 1 by directly showing which high s_surf(i,j) regions will have a significant damping effect on the small-dust production rate. Upper left panel: A-star primary and ⟨e⟩ = 0.075. Upper right: A-star primary and ⟨e⟩ = 0.01. Bottom left: solar-type primary and ⟨e⟩ = 0.075. Bottom right: solar-type primary and ⟨e⟩ = 0.01.