You are right about the traps, they will draw more beetles in.
On beans, which are good for the heart BTW, all we have grown for 5 or 6 years now are the Chinese long beans. We love them. Fast growing but very slow to thicken up and go to seed inside. Tender, flavorful, and less cutting off ends. We used to have them growing up a piece of fencing but the last 3 years we have sent them up a pole. Super easy to pick and they have a long season. Used to grow only bush green beans but they are a pain to pick. I have used the long bean seeds each year too.
That is good to know about the long beans, for if I ever get a piece of property where I can have a *real* garden. Maybe in a couple of years, when we may be looking to move for retirement. We do love where we live, but I would really like more acreage if we get the chance to move. I never seem to have enough land.