I'm sure that they are a big reason why you don't have any....they get the few that pupate...or the juicy grub stage. Maybe not a smorgasborg, they have to now settle for japanese beetle appetizers!I used to have a terrible Japanese Beetle problem. Every morning I would go out and drown them in a bucket of soapy water. Now suddenly I don't have any. I have been Japanese Beetle free for the last 3 years I think. Shame in a way because those juicy grubs would be a real treat for the chickens.