What is a potential risk when using poison to control nuisance wildlife?

The use of poison for controlling nuisance wildlife poses significant risks, particularly to non-target animals. When poison is introduced into an environment, there is always a chance that animals other than the intended pests may consume it. This can happen either directly, if non-target animals eat the bait, or indirectly, if they consume the carcasses of poisoned wildlife. The unintended poisoning can lead to severe ecological consequences, including the decline of non-target species and disruption of the local ecosystem. Moreover, the complications from poisoning can extend to pets and wildlife that are integral to the balance of the environment.

In contrast, while the other options might provide a perception of benefits, they do not accurately reflect the complexities and risks associated with using poison. Total removal of wildlife cannot be guaranteed; the cost-effectiveness of poison can be questioned due to potential need for repeated applications or the management of its side effects, and lasting effects can be detrimental rather than beneficial, impacting ecosystems in unforeseen ways.