Dung beetles are not harmful at all! They are benificial insects on dairy farms because they clear up the cow pats. Without them, the world will be a dung infested planet! They're also environmentally friendly If you're lucky enough to visit a dairy farm, ask the farmer to show you some dung beetles at work. Take a shovel with you to lift up the cow pat to find beetles. If you put the cow pat in a bucket of water, the beetles will float up to the surface. You can pick up the beetles - they're surprisingly clean and they won't bite! Source/s: The Story of Dairy, Workboot series.