Build this heavy duty fly trap for your homestead. Flies can pose a very serious risk to homesteaders and farmers that rely heavily on livestock for food and income. These pests can carry and spread diseases that can do serious damage to your animals. Unfortunately, controlling large numbers of flies can be much more difficult than you might think. Most traditional ways of trapping flies work well for those confined inside the home. When it comes to controlling them outside, you need to bring out the big guns, an industrial strength fly trap designed to catch large numbers of flies. Also while most large traps allow the flies to still lay their eggs, so you have to deal with the maggots, this one dries out the flies so you just empty the dry carcasses as needed.