My brother had a Box Elder tree and once we cut it down, he never had the bugs anymore. Before the tree was cut down he would have them all over the side of his house, under the siding, all over his mulch and porch.
I've never had a problem with the lady bugs, but the lady asian beetles that look like lady bugs but are orange now they are a pain. They bite too! I really only have a problem with them in the winter as they go back outside when it warms up.
Neither of the critters care for the seven dust too much!