Chemical resistant gloves should be worn:

Chemical-resistant gloves are a critical piece of personal protective equipment (PPE) for pesticide applicators. TheGeneral Pest Management: Guide for Commercial Applicators - Category 7A(Chapter 3: Pesticide Safety) and NJDEP guidelines require gloves to be worn when mixing or applying a pesticide, as both activities pose a risk of dermal exposure, the most common cause of pesticide poisoning (see Question 18). Option A (only when applying) ignores the risk during mixing, and Option C (only when mixing) ignores the risk during application.