Formulations

A notable advantage of a granular (G) formulation over a sprayable formulation is that granules:

• Stick readily to foliage and other uneven vertical surfaces
• Dissolve completely in water to form a true solution
• Release their active ingredient immediately on contact with the pest
• Have a low drift hazard because the heavier particles settle quickly ✓

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On a pesticide formulation, the "inert ingredients" (also called "other ingredients") are best described as the components that:

• Are the chemicals actually meant to kill or repel the target pest
• Are always non-toxic and pose no hazard to the applicator
• Do not control the pest, but serve other roles such as acting as a carrier or solvent ✓
• Determine the product's signal word and toxicity category

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Compared with most water-based dry formulations, a key handling hazard of emulsifiable concentrates (EC) is that they are:

• Highly abrasive and quickly wear out pump and nozzle parts
• Easily absorbed through the skin of humans or animals ✓
• Unable to be applied with standard spray equipment
• Prone to settling out unless constantly agitated in the tank

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When measuring and mixing a wettable powder (WP) concentrate, the primary exposure hazard to the applicator is:

• Inhaling the dry, concentrated powder during measuring and mixing ✓
• Rapid absorption of oil solvents through the skin
• Flammability from petroleum-based carriers near open flame
• Corrosion of the spray tank and metal fittings

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