Cultural controls are management practices that reduce the incidence of insect infestations, such as proper planting times and planting rates, planting companion crops, managing fertilization and irrigation to favor desired plants rather than insect pests, rotating crops, and planting cover crops or trap crops. Good sanitation, including manure management plans, will help reduce insect pest infestations, such as cockroaches and flies. Changing the environment to discourage insect pests by controlling temperature, light or humidity is another cultural control method.