Structural Pest Control Applicator Practice Exam

What effect do worn nozzle tips have on spray patterns compared to new nozzles?

1. Higher flow rates

2. Same flow rates

3. Lower flow rates

4. Smoother spray patterns

The correct answer is: Lower flow rates

Worn nozzle tips lead to changes in the spray pattern by typically producing higher flow rates due to the larger openings created by wear. As the openings in the nozzles increase, they allow more pesticide liquid to escape, which can result in a fan pattern that may be much wider than intended, thus affecting the uniformity of the application. By contrast, a new nozzle would deliver an optimal, consistent flow rate designed for precise application. It would provide a more controlled distribution of the pesticide, ensuring that it is applied exactly where needed. With worn nozzles, the likelihood of less accurate targeting increases, potentially leading to overspray or uneven coverage, which is undesirable in pest control applications. Therefore, the impact of worn nozzle tips on spray patterns primarily includes higher flow rates rather than lower, further amplifying the dispersion of the chemical solution and compromising the efficiency of pest control measures.