Beetles damage ash trees. The article talks about how to save ash trees. 1. Banning transportation of ash trees, which will take beetles' nests to other areas. (They cannot prohibit private companies that cut down ash trees to be firewood.) 2. Drilling holes on the ash trees to inject a chemical pesticide that make beetles leave away ash trees. (Drilling to much holes will damage ash trees. The cycle of injecting a pesticide is two years.) 3. Planting trap trees that beetles like to lay their eggs on. (Trap trees are beetles' food, which will increase the population of beetles and hurt more ash trees.)