What type of barriers can be effective against pests?

Physical barriers, such as nets and traps, are highly effective against pests because they serve as a direct means of preventing pest access to plants or areas where pests are not desired. Nets can physically block insects from reaching crops, while traps can capture and remove pests from the environment. These barriers work by creating a physical separation between the pests and the target area, reducing the likelihood of infestation without relying on chemical methods.

The effectiveness of physical barriers is supported by their ability to disrupt the pest’s movement and lifecycle. For instance, using insect mesh to cover plants can protect them from flying insects, while traps can be strategically placed to target specific pests that can be lured in.

In contrast, the other options either suggest ineffective methods, outline misconceptions, or provide alternatives that may not directly prevent pest issues.