What is an example of a mechanical control method for vertebrate pests?

Mechanical control methods for vertebrate pests involve physical means to manage or eliminate pest populations without the use of chemicals. Setting traps is a prime example of this approach, as it uses devices designed to capture or kill the pests directly. Traps can be effective in targeting specific species while minimizing harm to non-target organisms.

In contrast, the other options fall under different categories of pest management. Removing the food source is an ecological control method, which aims to eliminate the factors that attract pests. Using chemical repellents classifies as a chemical control method, which relies on substances to deter pests. Planting pest-resistant crops is a biological control strategy, focusing on using agricultural practices to reduce pest populations naturally. Thus, setting traps distinctly represents a mechanical method, making it the correct choice.