urban deadzone with chemically sterilized turf lawns. five years ago ants, aphids and box-elder were the only insect in the yard. i've set up a couple rain water ponds and planted large sections of native flowers over the past couple years. insect diversity has drastically improved, i spotted half a dozen bumblebee queens zig zagging the yard this spring. set up long piles of last seasons plant cuttings for overwintering.