Back in the spring when my girls were a month or two old I let them free range one day and noticed they did a number on the Box Elder bugs that were on the barn. I honestly couldn't find a single one where their had been several dozen earlier. I was so happy to discover this and thought when the infestation really started in the fall, like it does every year, the chickens will take care of it. I was even bragging to friends and family I had found the Box Elder bug cure. Now that fall is here I have probably the worst infestation I've ever seen on that barn and my girls won't even look at them. In fact I watched a bug land on the back of one girl, she turned her head around, picked it up and flung it. I don't get it what changed?