You needn't build a better mousetrap to control pests.
D000818:Animals; D008284:Maintenance and Engineering, Hospital / Q000379:methods* / Q000592:standards; D010571:Pest Control / Q000379:methods* / Q000592:standards; D010575:Pesticides / Q000592:standards; D010934:Planning Techniques; D012449:Safety; D014481:United States; D014484:United States Environmental Protection Agency