Cumulative size distribution of the dust grains lost up to a time of 1 Myr for the simulations shown in Sect. 4.2, for the different UV fluxes, and trap properties. The line styles represent the disks with an inner trap, an outer trap, and no traps at all (solid, dashed, and dotted lines respectively). For the disks with low irradiation environments (10² G₀) the dust traps have no effect on the lost dust distribution and the three lines overlap.