Media Release
Black fly populations are surging across the San Gabriel Valley, particularly affecting foothill residents. The combination of local running streams and the black flies’ five-mile travel range has led to a significant increase in activity throughout these neighborhoods. Similarly to our approach on mosquitoes, our team of Vector Control Technicians are actively monitoring and applying treatments to reduce black fly populations, targeting areas where larvae are known to develop.
What’s important to know?
- Adult black flies can not be effectively controlled with pesticides
- They tend to gather cool, shaded areas
- They typically target the face and neck when biting
- An adult black fly lives for approximately 1 month
How can you protect yourself?
- Wear head nets when outdoors
- Wear loose fitted, light colored clothing
- Use insect repellent containing DEET
For more information, visit our Black flies resource page.
