Even though we still have about 18 inches of snow on the ground, the chipmunks are out in full force. We usually enjoy the cute little critters, but this past year they dug into our rock wall by our front porch and we are afraid they might be damaging it. We don't want to poison them, cuz of our dog. Our neighbors shoot them, but that doesn't seem to dent their population and I've heard live trapping isn't the way to go either. Any other suggestions?