You guys who know these things....is there anything that can be applied as somewhat of a pre- to stop the durn Japanese beetles before they get going? They decimated our sweetcorn a couple years ago before we caught up, and the two ornamental trees in the yard took hard hits last year to the top branches as it was tough to get the spray up high enough to catch the whole area. So just wondering if there's any way to be prepared before we actually start seeing the damage. Thanks!