Which of the following statements about fumigant formulations is true?

Fumigants play a crucial role in pest management, particularly due to their ability to penetrate soils and structures effectively. The first statement about fumigants being limited to soil, enclosed structures, and containers is accurate. Fumigants need a controlled environment to ensure they can disperse evenly and effectively target pests. This limitation highlights the specific application areas where their efficacy can be maximized.

Furthermore, the third statement that fumigants are the most hazardous of all pesticide formulations is also true. Their gaseous state often leads to an increased risk of exposure to humans, pets, and non-target organisms if not handled correctly. This high level of hazard necessitates stringent safety protocols and proper training for applicators.

Thus, by acknowledging that both of these statements are true, the correct answer encompasses both in the choice that includes them. This reinforces the understanding that while fumigants are highly effective, they also come with significant risks, necessitating careful usage and adherence to safety standards.