Having retired ten years ago, I thought that I'd seen my last invasion of flies in the summer. I used to run a large farm in Southern Wyoming with my wife and children. That was a mixture of dairying, crops and horses. The latter were used for getting around the place the old-fashioned way. With all those animals, however, you will get the problem of flies and trying to control them, particularly in the summer months. We used to have to go to all kinds of lengths to keep the situation covered with a lid, so to speak. It started with the strong chemicals. Many of them have since been completely banned all over the United States and in many parts of the foreign world. So then they all got replaced by the more organic kinds of stuff. This involved using enemy predator insects that would eat the larvae of the flies and cut off the supply at the head so to speak. The thing about flies is that they are definitely getting worse. Back in the 1960s, we used to have them but they never really got out of control. By the 1970s, we were facing a different challenge. Unfortunately, that was met with all kinds of harsh chemicals that were used like a sort-of Agent Orange for flies: take them out and anything else that gets in the way. I think that the situation was actually made worse during those years. I believe that the lab-rats' ill-conceived solutions simply created a problem for the future while creating the convincing illusion that they were sorting out the problems of the present. During those years, the fly numbers simply exploded. We went from having a manageable fly situation to one which was not possible to manage. As the attack was waged every year, natured came fighting back to redress the imbalance created by doubling up the number of flies in the world. It's no coincidence either that you're getting a greater variety of types of flies. Originally, the purpose of the fly is break down rotting matter, but where do those flies come from that just want to land on you all day? Chemical-induced evolution is the cause of it, I say. So now, after all our travails over years of working on the farm, we're retired in suburbia, having a reasonably nice time. The only thing is how to get rid of flies in the house. There are no farms for miles around, but still flies getting rid of them has become a preoccupation. The blue green fly is the biggest pest of them all. We've tried a lot of pest control products and we've tried our hand at mosquito control by using mosquito spray, but the best of all are those predators. They worked like a treat first time around and there is no chemical kick-back from nature, it seems.