Flies get no respect. People shoo them. They swat them. They use bug spray to kill them. But the next time you see a fly, think twice before you strike. Flies can be annoying but helpful too. They are pollinators. Pollinators help plants produce the fruits and vegetables we love to eat. Flies pollinate pears, strawberries, and even cacao, the nut used to make chocolate. Flies work hard for us—and they do it for free! Native Pollinators: Flies is a good place to start to learn about these hardworking insects.