Which of the following outcomes may result from improperly sealed tarps during fumigation?

Improperly sealed tarps during fumigation can lead to increased fumigant leakage. When tarps are not adequately sealed, the fumigant can escape into the environment instead of being contained within the area where the treatment is intended. This leakage not only reduces the efficacy of the fumigation process—since less fumigant means a lower concentration is available to eliminate pests—but also poses potential risks to surrounding areas, wildlife, and human health.

Effective fumigation relies on maintaining a controlled atmosphere where the concentration of fumigant can do its work without loss to the surroundings. Thus, proper sealing of tarps is critical to achieve the desired pest control while minimizing environmental hazards.