Which is an appropriate site to apply a zinc phosphide tracking powder to control mice?

Applying a zinc phosphide tracking powder inside infested walls is the most appropriate choice for controlling mice. This application location is effective because it allows the bait to remain hidden from non-target animals and people, reducing the risk of accidental exposure. Mice typically harbor and nest within wall cavities, making it a prime area for targeting their populations directly.

Using tracking powders in enclosed spaces like walls increases the likelihood of contact by mice while minimizing risks associated with open environments. Other areas, such as suspended ceilings, near air ventilators, or close to food preparation areas, are less suitable due to the potential for contamination or exposure to non-target species, including pets and humans. Proper placement not only enhances efficacy but also aligns with safety protocols for pesticide application, promoting responsible pest management practices.