What is the preferred method of control for the vertebrate pests discussed?

The preferred method of control for vertebrate pests is exclusion because it focuses on preventing pests from entering or accessing a structure altogether. This approach is environmentally friendly and promotes a more sustainable pest management strategy by addressing the root cause of the problem rather than merely dealing with the symptoms through chemical means or other control methods.

Exclusion tactics can include sealing entry points, installing screens, and maintaining the integrity of structures to keep pests out. This method not only reduces the likelihood of infestations happening in the first place but also minimizes potential harm to non-target species and the environment. Effective exclusion can lead to long-term pest management, as it disrupts the pest's ability to settle and reproduce in the area.

While options such as non-lethal repellents and pesticide baits may have their uses, they typically address the problem after it has already manifested and may not provide a long-term solution. Relying solely on these methods can lead to recurrent issues with pests rather than eliminating the potential for future problems through exclusion.