What is 'fumigation' and when is it used?

Fumigation is a pest control method that involves the application of gaseous pesticides, commonly referred to as fumigants. This approach is particularly effective for severe infestations, as the gas can penetrate various materials and structures, reaching areas that other forms of pesticide application may not. It is often employed in situations such as treating grain storage facilities, greenhouses, and buildings that have been infested with pests like termites or bed bugs.

Fumigation is advantageous because it can address a wide range of pests in a single treatment, providing thorough coverage and ensuring that pests hidden in cracks and crevices are also affected. The use of gaseous pesticides allows for the treatment of large, sealed environments and makes it a preferred method in scenarios where traditional liquid applications would be less effective.

In contrast, other methods mentioned do not adequately cover the nature and purpose of fumigation. For instance, using liquid pesticides for minor infestations generally does not utilize the same principles as fumigation and is less effective for severe cases. Techniques like trapping or using water to eliminate pests do not involve the gaseous state necessary for fumigation and may not provide the comprehensive control that severe infestations require.