Which statement best encapsulates the purpose of pheromones in pest control?

The purpose of pheromones in pest control is primarily to attract or confuse pests, particularly within monitoring systems. Pheromones are chemical signals emitted by animals and insects that convey information to members of the same species. In pest management, these substances are utilized strategically to lure pests into traps or disrupt their normal behaviors, such as mating or foraging.

Using pheromones in monitoring systems allows for the early detection of pest populations and helps in assessing their distribution and life cycle, which is vital for informed decision-making in pest management strategies. Instead of extermination, pheromones provide a means of managing pests in a more environmentally friendly and sustainable way, often leading to reduced reliance on chemical pesticides.

In contrast, the other statements do not reflect the broader use of pheromones accurately. While some forms of pest control might involve extermination, this is not the sole purpose of pheromones. Pheromones do not replace physical traps; rather, they enhance their effectiveness. Additionally, pheromones are not required to be used with chemical pesticides, as they can be part of an integrated strategy where their use may minimize or eliminate the need for additional chemicals.