When handling or using pesticides, which operation is considered the greatest risk to the exterminator?

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The highest risk during pesticide handling comes from the mixing and loading step because that’s when you’re directly handling concentrated product. Transferring a concentrated formulation into the spray tank, opening containers, and pouring or measuring active ingredients creates the greatest chances for dermal contact, splashes to eyes, and inhalation of fumes or aerosols. Spills and splashes can contaminate skin, clothing, and the work area, increasing exposure risk before the product is diluted. Once the chemical is diluted in the tank, the concentration people are exposed to is lower, and the exposure pathways are less intense during actual spraying (though still present with proper PPE and controls). Equipment maintenance and reentry to a treated area can involve exposures as well, but the peak exposure conducted during mixing and loading is typically the highest due to handling concentrated material.