Fumigants are mainly used on which types of pests?

Fumigants are primarily utilized for targeting stored product pests and wood-destroying organisms (WDO). This is because fumigants are gaseous pesticides that can effectively penetrate various materials, such as grain, dried fruit, and wood products, where these pests often reside or infest.

Stored product pests, such as weevils, beetles, and moths, are commonly found in warehouses, distribution centers, and food storage facilities. Fumigation allows for a comprehensive treatment approach, ensuring that even pests hidden within the products or structures can be addressed. Similarly, wood-destroying organisms, including termites and other wood-boring insects, can be eradicated utilizing fumigants, as they can permeate the wood and target the pests inside.

In contrast, the other options do not accurately encompass the primary usage of fumigants. While fumigants can affect outdoor pests and insects in soil, their main strength lies in targeting pests associated with stored products and structural wood damage.