What is the purpose of having screens on windows and openings?

• A. To improve ventilation and airflow.
• B. To prevent pest access.
• C. To reduce noise.
• D. To regulate humidity.

Answer: (B)

Screens on windows and openings are primarily there to act as a barrier that allows air to flow while stopping pests from getting inside. In food safety, preventing insects and other pests is crucial because they can carry contaminants, spoil products, and introduce pathogens or debris into clean areas. A proper screen with a fine mesh keeps flies, mosquitoes, and most crawling insects out while still letting fresh air in, supporting ventilation without inviting pests. While screens may have a small effect on airflow or noise, their main purpose is pest exclusion, not humidity regulation or acoustic improvement. Keep screens intact, clean, and promptly repair any damage to maintain effectiveness.