Trap blocking efficiency ℬ (Eq. (4)) of a dust trap by t = 5 Myr for a range of planet mass M_p (30, 100, 300 M_⊕) and location a_p (5, 10, 40 au). The fragmentation velocity is set to v_frag = 1 m s⁻¹ (Sect. 2.1). For each case, we run simulations for 25 pairs of viscosity α_visc and local turbulence δ_turb. In total, 300 simulations were used to build this figure. As discussed in Sect. 3.1, a blocking efficiency close to zero indicates a highly permeable dust trap, while a blocking efficiency approaching unity corresponds to a highly blocking trap. We indicate an estimate of the Stokes number of fragmentation-limited pebbles (${\mathrm{S}\mathrm{t}}_{\text{frag}}=v_{\text{frag}}^2/3{\delta }_{\text{turb}}{c}_{\mathrm{s}}^2$) in the dust trap under the x-axis, as it varies with δ_turb and position in the disc.