Wood Destroying Organism (WDO) Home Inspection Practice Exam

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What issue may arise from using chemical pesticides in air ducts?

  1. Reduced effectiveness

  2. Pest resistance

  3. Health hazards from contaminated air

  4. Physical damage to the ducts

The correct answer is: Health hazards from contaminated air

Using chemical pesticides in air ducts can lead to health hazards from contaminated air due to the distribution of toxic substances throughout the indoor environment. When pesticides are applied in enclosed spaces like air ducts, they can become aerosolized and spread through the air, allowing occupants to inhale harmful chemicals. This can result in various health issues, especially for sensitive individuals, such as respiratory problems, allergic reactions, or other toxic effects. While it is true that chemical pesticides may lose effectiveness over time as pests can develop resistance or that they may cause physical damage to the ducts, the primary concern in the context of air duct use is the potential for health hazards. These health issues pose significant risks to individuals in the space who are exposed to the contaminated air, making it a critical factor to consider when dealing with pest control in such areas.

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