I finally gave up and just hoped that a few things would survive. And since I went back to work i couldn't spend a ton of time smashing bugs. I went out yesterday and guess what-I had another invasion-of predatory wasps, lady beetles, and praying mantises!! Not a squash bug in site. I am cautiously optomistic and hoping that being patient will do it. Oh and my watermelons are going nuts, woohoo.