What does a harmful classification indicate for a pesticide product?

A harmful classification for a pesticide product signifies that the substance possesses a significant level of toxicity, which can pose serious health risks to humans and animals. This classification indicates that exposure, whether through ingestion, inhalation, or skin contact, could result in severe health consequences, potentially even fatalities. Understanding this classification is crucial for applicators, as it underscores the need for proper handling procedures, protective gear, and adherence to safety guidelines to minimize exposure risks.

The other classifications would not correctly reflect the implications of a harmful pesticide. Low toxicity does not warrant a "harmful" classification, as this suggests safety rather than risk. Similarly, a product being safe for residential use or generally safe for the environment implies a level of safety that contradicts the idea of it being harmful. Thus, knowing that a harmful classification reflects a danger to health is essential for safe pesticide application practices.