In this fifth installment of our Category B study series (Part 5 of 11), we confront the physical realities of using pesticides in sensitive urban environments. This episode covers Chapter 5: Hazards Associated with Pesticide Use, focusing on how to protect people, pets, and the ecosystem from injury. We break down the "Injury Formula" (Toxicity × Dose) and explain why controlling the dose is the applicator's primary job. We also dive deep into the mechanics of drift, the critical difference between storm drains and sewers, and why groundwater contamination is a mistake that lasts for centuries.

Key Topics Covered:

• The Injury Formula: Understanding that Risk = Toxicity (the chemical's power) × Dose (how much gets in). You can't change the toxicity, so you must control the dose.
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