Most classical pesticides are now found in almost every media such as water, air, food and drinks, thus threatening human health. Moreover, those pesticides are inefficient in the long run because pests adapt to pesticides fast. There is therefore a need for guidelines explaining how to reduce pesticide usage and develop new strategies. Barzman et al. propose eight principles of integrated pest management (IPM). They show in particular that the complexity of farming systems can improve pest management.