Although I haven't had any issues with curl grubs in the lawn, i grow a solid amount of natives and get the odd one or two, but the natives which prefer richer, moist soils there would be 15-20 of them they, seem to like rich, moist soils. My current war is trying to convince a neighbour to erase the weed asparagus they have growing everywhere so it dosnt spread like a fire into our yard,