What does an EPA registration number on a pesticide signify?

The presence of an EPA registration number on a pesticide signifies that the product has undergone a thorough evaluation process conducted by the Environmental Protection Agency (EPA). This registration indicates that the pesticide has been assessed for its efficacy and safety regarding human health and the environment, and has been approved for use under specific conditions outlined by the EPA. This means that the pesticide meets the regulatory requirements that govern its formulation, labeling, and intended uses, ensuring it does not pose unreasonable risks when used according to the instructions provided.

The other options do not accurately reflect the significance of the EPA registration number. It does not mean the pesticide is entirely safe for all use; every pesticide has specific conditions of use. While the number may reveal some details about the manufacturer (as it can be linked to their registration), its primary purpose is to certify that the product has been evaluated and is approved by the EPA. Lastly, the registration number does not provide information about the pesticide's shelf life, which is typically indicated separately on the product label.