We've been noticing quite a few webworms and armyworms on the move in our yards (Volusia county). Have had some significant damage in some, others not much. We use Arena WDG in all of our yards. It's been anywhere from 60 - 90 days since we put it out depending on the rotation, but we are still seeing damage in yards that were hit 60 days ago. The chinch bug control has been good, but not sure what to expect with these worms. I thought the Arena was supposed to have up to 120 day residual. Any thoughts or suggestions?