Under which circumstances must the certified applicator be physically present at the application site?

• A. If the client requests it.
• B. Only for restricted-use pesticides.
• C. There are no circumstances.
• D. If state law or the label requires it.

Answer: (D)

The key idea is that being on site is required only when the pesticide label or state law says so. Labels spell out how a product must be used, including whether the applicator must be physically present during mixing, loading, handling, and application. State laws can add similar mandates or stricter rules. So the circumstances under which you must be present are defined by those legal requirements, not by a client’s request or by a general category of pesticide. If the label or law requires you to be on site, you must be there; otherwise, presence isn’t mandated.