Which of the following is a limitation of using chemical insecticides?

Chemical insecticides can significantly impact the environment in various ways, which makes this option the most appropriate choice. These impacts can include harm to non-target organisms, contamination of soil and water, and disruption of ecosystems. For instance, insecticides can affect beneficial insects, such as pollinators, and lead to adverse effects on wildlife and biodiversity.

While some insecticides may have a limited effective range, this is not universally true for all chemical products, as many can be formulated for broad-spectrum use. The high cost of certain insecticides can be a concern for some users, but there are many affordable options available in the market. Lastly, the requirement for specialized training to use these chemicals can vary; some insecticides may have guidelines that anyone can follow without extensive training. However, the potential environmental impact remains a critical consideration and limitation when using chemical insecticides.