What should be involved in the assessment of ineffective pesticides?

In assessing ineffective pesticides, it is critical to identify both the specific pest causing the problem and to reconsider the pesticide product being used. Proper pest identification is essential, as different pests can exhibit varying levels of resistance to specific chemicals, and misidentification can lead to the use of an ineffective treatment. Additionally, the choice of pesticide is significant; factors such as the pesticide's active ingredients, mode of action, and application timing can significantly influence its effectiveness. By re-evaluating both the pest and the chosen product, one can adjust the pest management strategy to achieve better results.

The other options focus on limited aspects of the problem. Reviewing only the application method doesn't encompass the broader factors that contribute to efficacy issues. Similarly, the pH level, while relevant for some products, does not address the key issues of pest identification and product choice. Lastly, changing only the target pest suggests a misinterpretation of the pest management approach, as understanding and addressing the existing pest is fundamental to improving treatment outcomes. Therefore, a comprehensive assessment that includes both pest identification and product reconsideration is essential for effective pest management.