Which of the following is NOT an exception to conflict with labeling?

The choice indicating that increasing the dosage rate per unit treated is not an exception to conflict with labeling is correct because pesticide labels are legally binding documents that specify how a product should be used for safe and effective results. When a pesticide label specifies a particular dosage rate, it is designed to ensure that the application meets safety and efficacy standards as tested by the manufacturer and regulated by agencies.

Increasing the dosage beyond what is explicitly stated on the label can lead to unintended consequences, including damage to the environment, harm to non-target organisms, or even the creation of resistance in pests. Each product is formulated for specific application rates that have been tested to minimize risks, and deviating from these can violate regulations and potentially lead to adverse outcomes.

In contrast, decreasing the concentration of a mixture, using the pesticide on non-listed pests, or mixing with another pesticide can sometimes be acceptable under certain circumstances, provided they don't explicitly conflict with any prohibitions outlined on the product label. Each of these alternatives is typically analyzed within the context of the label instructions, allowing for some flexibility in pest management practices, while maintaining compliance with safety regulations.