I have had problems with eggs being laid under crape myrtle leaves (pictures attached) and the damage t their hatchings (little black bugs) cause. I believe the eggs feed on the leaves because the upper sides of the leaves become shiny leaves before they deteriorate. I have washed them off by hand (small bush) and sprayed numerous times with Hi Yield’s BugBlaster II yet they come back within days. Is there a way to prevent them?