A mosquito bite is an annoyance. A bite from an infected mosquito can be a public health concern. Understanding where mosquitoes breed, and actions everyone can take to eliminate them, can lead to greater peace of mind and reduce health risks.
Mosquitoes lay eggs in water-filled containers as small as a bottle cap. The most effective method of controlling mosquitoes is eliminating opportunities for them to breed. Remember these tips – and share them with neighbors: 
- Once a week, empty and scrub, turn over, cover, or throw out items that hold water such as flowerpots, watering cans, buckets, planters, toys, birdbaths, garbage cans and lids. Mosquitoes attach eggs to the sides of containers. If the water in the container dries up, the eggs stay dormant until the next rainstorm. It’s not enough just to dump standing water – you need to scrub out the container too.
- Tightly cover water storage containers, such as rain barrels, or use wire mesh with holes smaller than an adult mosquito.
- Clean gutters and downspouts regularly. Position drain pipes to ensure drainage.
- Fill in low spots in yards, where water pools.
- Use screens on windows and doors. Repair holes in screens.
For more information, visit www.rockvillemd.gov/mosquito.