Mosquitoes, those tiny but oh-so-annoying members of the Culicidae family, are the bane of many homeowners' existence. With their needle-like mouthparts, these buzzing bloodsuckers can turn a peaceful evening on the patio into a swatting frenzy. While they might be small, these pesky pests can certainly make a big nuisance of themselves. Their bites leave itchy welts, and in some cases, they can even transmit diseases. Learning some key mosquito facts can help in identifying and dealing with these pests.
Key physical features:
Life cycle — four stages:
In the Western United States, there are approximately 50 mosquito species. Overall, the United States is home to about 200 species, while there are thousands of mosquito species worldwide. Here are three of the main types of mosquitoes you can find in the Western United States:
Anopheles mosquitoes are primarily known for being malaria vectors. In the Western U.S., Anopheles quadrimaculatus. They are often found in freshwater habitats, such as marshes and lakes.
Culex mosquitoes include several species, such as Culex pipiens (the common house mosquito). They are typically brown and have a more robust body than other species. They are known to transmit West Nile Virus and other diseases.
Aedes mosquitoes, especially Aedes aegypti and Aedes albopictus (the Asian tiger mosquito), are becoming more common in the Western U.S. These species are known for transmitting diseases like Zika virus, dengue fever, and chikungunya.
Mosquitoes are most active at dawn and dusk, when cooler temperatures and lower light give them cover to feed. They thrive in warm, humid conditions, typically between 70°F and 80°F, and are drawn to standing water, which they need to breed.
They locate hosts using a sharp sense of smell, detecting carbon dioxide, body heat, and sweat from hundreds of feet away. That familiar buzz is the sound of their wings — a reliable sign they're close.
The most obvious sign of mosquito activity is an itchy bite, but you'll also spot them hovering near stagnant water or resting in dense vegetation during the heat of the day.
Mosquito bites appear as small, raised red welts on the skin that often itch and burn. They use their needle-like proboscis to pierce the skin and inject saliva that prevents blood clotting. This saliva is what causes that irritating itch. Beyond their annoyance, these pests pose a significant public health threat, as they can carry diseases such as malaria, dengue fever, and Zika virus. Globally, mosquito-borne illnesses cause hundreds of millions of infections each year, so effective mosquito prevention and control measures are crucial.
While often seen as a nuisance, mosquitoes do play essential roles in the ecosystem. Mosquitoes serve as a food source for various predators, including birds, bats, frogs, and some fish. If these pests were to go extinct, it could disrupt the food chain and leave many of these animals hungry. Certain types of mosquitoes also contribute to pollination, aiding plant growth.
Mosquitoes aren't always easy to spot until they've already made themselves at home in your yard. Knowing what to look for can help you act before populations build up.
Common signs of mosquito activity include:
If you're noticing any of these signs around your property, it's worth getting a professional assessment. Learn more about the signs of mosquitoes and what they mean for your home, or find out how to get rid of mosquitoes with targeted, professional treatment.
DIY steps like removing standing water and wearing repellent can help, but they rarely solve the problem on their own. For reliable, longer-lasting results, professional mosquito control is the more effective route.
Our technicians use an integrated pest management (IPM) approach to target mosquitoes at every stage of their life cycle. We also offer a combined mosquito and tick control for full-yard protection.
Mosquitoes are drawn to certain biological cues, including carbon dioxide, body heat, sweat, and blood type, which can all play a role. Some people simply produce more of these attractants, making them a more appealing target. There's not much you can do to change your biology, but professional mosquito control can help reduce the number of mosquitoes around your property in the first place.
Not every mosquito carries a disease, but certain species — particularly Aedes aegypti and Aedes albopictus — are known vectors of illnesses such as West Nile virus, Zika, and dengue fever. The risk varies by region and season.
Male mosquitoes live for about one to two weeks, while females can survive for several weeks, long enough to bite multiple times and lay multiple batches of eggs. Warm, humid conditions extend their lifespan and speed up breeding cycles. That's why consistent treatment throughout the season is more effective than a single one-off application.
Most mosquito species are most active at dawn and dusk, when temperatures are cooler, and the wind is calmer. Some species, such as the Aedes mosquito, also bite during the day. If you're spending time outdoors during these windows, mosquito activity is likely at its peak.
Some species overwinter as eggs or larvae in standing water, lying dormant until temperatures rise again. Adult mosquitoes typically die off in cold weather, but they can also shelter in protected spots like basements or crawl spaces.
A wood-burning fire pit can offer some deterrence. Mosquitoes dislike smoke, and the heat and dryness around a fire make the immediate area less hospitable. That said, the effect is limited to a small radius and won't protect your whole yard.
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