If standing water persists after initial drainage and debris cleanup, what is the recommended action?

• A. Reassess and consider additional larvicide treatment if persistent sites remain.
• B. Treat persistent sites with larvicides if needed.
• C. Abandon the area and do nothing.
• D. Increase the number of people applying pesticides to the area.

Answer: (B)

When standing water still exists after drainage, treat those persistent water-holding sites with larvicides if needed. Larvicides target mosquito larvae in the habitat itself, stopping development before they become adults and helping reduce future mosquito numbers. This targeted action is more effective than doing nothing or increasing general spraying, and reassessing the site as needed is part of the process, but the direct response to persistent breeding habitat is to apply larvicide according to label directions.