Mosquitoes

Mosquito control starts with finding and removing standing water, then preventing bites. A yard spray does not replace screens, personal protection or current guidance from the local mosquito program.

Know the suspect

Mosquitoes are small, slender flies with long legs and a feeding proboscis; appearance and size vary by species. Some container-breeding Aedes have black-and-white markings, while the southern house mosquito is important to Dallas County West Nile prevention. Around DFW homes, inspect pots, buckets, gutters and other water holders. Adults can enter through damaged screens or open doors; do not identify disease risk from color alone. Dallas County mosquito prevention Extension identification and habitat guidance

The wanted portrait is a stylized AI illustration, not an identification photograph. Compare the actual animal and its markings with an Extension identification guide.

What they can do

Infected mosquitoes can transmit West Nile virus. A mosquito bite does not establish infection, and a yard sighting cannot indicate which insects carry the virus. Use public-health information rather than guessing from bite marks. Dallas County West Nile guidance

Start with control, not a spray

1. Empty, cover or turn over containers that collect rain or irrigation water.
2. Clean gutters and maintain birdbaths and water features.
3. Repair window and door screens.
4. Wear long, loose clothing when practical and limit exposure at dusk and dawn.
5. Recheck the yard after rain; mosquitoes can arrive from nearby properties even after your cleanup.

The county also advises labeled personal repellents. Biting times vary by species, so dusk-and-dawn caution does not replace protection during other outdoor activity. Texas A&M guidance

Chemicals you may encounter

Extension names Bacillus thuringiensis israelensis (Bti) and methoprene as larvicide examples for water that cannot be drained. These are examples, not permission to treat any pond, drain or public waterway. Larvicides target developing mosquitoes, not adults already flying. Broad sprays can harm pollinators and other beneficial insects. Extension backyard mosquito guidance

The label is the law. Use a product labeled for the actual pest and location, and follow its directions for placement, amounts, protective equipment and re-entry. Keep products and treated areas away from children and pets as the label directs. Never use an outdoor-only pesticide indoors or assume more product works better. EPA pesticide safety

Seasonal watch

Use warm-season North Texas weather, rainfall and irrigation as prompts to inspect water holders. Check the local county mosquito program for current West Nile advisories; this page does not claim an active alert or current case count. Risk and activity can change, so do not rely on a fixed seasonal start or stop. Texas A&M guidance

When to get help

A qualified, licensed pest professional can assess persistent breeding or adult activity after source reduction. Ask about the breeding source and exposure to non-target insects. Seek a doctor for illness after mosquito exposure; severe symptoms such as confusion or neck stiffness need prompt medical attention. Texas A&M guidance

This field guide is educational and does not offer treatment bookings.