The 2021 NYC Pest Control Guide: Mosquitoes

Here’s what you need to know about dealing with mosquitoes in New York City including facts, prevention, control, and treatment.

Guide Sections:

Why Are There So Many Mosquitoes In New York City?

New York City is ranked #6 among Orkin’s Top 50 Mosquito Cities list in 2021. For New Yorkers who own a backyard or enjoy spending time outdoors, this might not be too surprising.

Relative to other parts of the country, summer in NYC is hot and humid. And given our population density, there’s always plenty of humans around for mosquitoes to get their next blood meal from.

Although mosquitoes are known as a year-round pest, their activity spikes when temperatures reach 70 degrees Fahrenheit.

Peak mosquito season in NYC usually lasts all the way from April until October, and it’s expected to get even longer due to climate change. In fact, last year meteorologists changed NYC’s classification from a “humid continental climate zone” to a “humid subtropical climate zone,” which is an ideal environment for mosquitoes to thrive.

Facts About Mosquitoes

There are over 3,000 species of mosquitoes in the world, and approximately 70 of them are known to live in New York. Contrary to popular belief, the majority of mosquito species do not feed on people. If you live in NYC or Long Island, there are 2 main species of mosquitoes that are likely to bite you:

  • Culex pipiens (the common house mosquito)
  • Aedes albopictus (the Asian Tiger Mosquito)

Both of these species are considered vector pests, which means they are known to transmit infectious diseases.

Culex pipiens is a type of permanent water mosquito, which lays batches of egg “rafts” in bodies of standing water. Aedes albopictus is a type of floodwater mosquito that lays its eggs in soil or containers, which hatch once rain or flooding causes the water level to rise.

Culex and Aedes mosquitoes can appear very similar, but you can identify Aedes mosquitoes by the black and white patches on their bodies.

Mosquito Life Cycle

The mosquito life cycle involves 4 main life stages: eggs, larvae, pupa, and adults.

After a blood meal, adult mosquitoes lay their eggs either in soil or directly in standing water. Water, or moisture, is required for eggs to hatch, which can happen within a few days to several months. Mosquito larvae develop into pupae in as little as 5 days, and pupae develop into adult mosquitoes after another 2 to 3 days. In total, this process from egg to adult takes approximately 8 to 10 days.

The average lifespan of adult mosquitoes is 2 to 3 weeks, although depending on the species and environment, some adult mosquitoes can survive for several months.

Mosquito Behavior

  • Mosquitoes can travel at speeds of 1 to 2 miles per hour.
  • Aedes mosquitoes are most active during the day, while Culex mosquitoes are most active at dawn and dusk
  • Contrary to what most believe, mosquitoes do not need to “suck” blood to survive. Instead, mosquitoes typically feed on nectar, fruit juices, and plant sap for sustenance.
  • Only female mosquitoes bite. They require a blood meal before they can lay their eggs.
  • Out of thousands of mosquito species, only a small number prefer to bite humans. Most prefer to get blood from other animals.

What Attracts Mosquitoes?

To avoid getting bitten, it’s important to understand what attracts them to us in the first place. There are several ways that mosquitoes sense people — and certain people more than others.

  • Heat — Using extremely sensitive temperature-sensing receptors on their antennas, mosquitoes are drawn toward body heat to help them find targets to feed on. People that generate more heat, like joggers or overweight people, are more likely to get bitten.
  • Carbon dioxide (CO2) — Mosquitoes can detect the CO2 exhaled in a person’s breath from up to 30 feet away. Heavy breathing, such as during exercise, is more likely to attract mosquitoes.
  • Sweat — Mosquitoes are attracted to both water vapor and lactic acid, which are produced when people sweat.
  • Dark colors — Research has shown that mosquitoes are attracted to dark colors, particularly black.
  • Alcohol consumption — Interestingly, a study in 2002 showed that people who consumed beer were more attractive to mosquitoes than people who did not.

Mosquito Bites & Diseases

The CDC refers to mosquitoes as the “world’s deadliest animal” for good reason.

Mosquitoes cause more than 700,000 deaths around the world each year through the diseases they carry. While not all mosquito species are disease vectors, the ones that are can carry a variety of devastating diseases.

In 1999, Queens was the center of a West Nile virus outbreak that spread throughout the country. Culex mosquitoes carrying and spreading the West Nile virus continue to pose a threat to New Yorkers today, causing between 3 to 47 cases in the city every year.

In New York City, especially in areas outside the city, potential mosquito-born diseases include:

  • West Nile fever
  • Zika virus
  • Dengue fever
  • Chikungunya fever
  • Malaria
  • Eastern Equine Encephalitis

How To Tell if You Have Mosquito Bites

Sometimes mosquito bites seem to appear out of nowhere on our bodies. That’s because mosquito saliva contains a naturally occurring anesthetic that allows their bites to go unnoticed. Mosquito saliva also contains anticoagulants to prevent blood from clotting, allowing them to get their blood meal quickly.

Reactions to mosquito bites can vary from person to person, but the most common signs are redness, bumps, and itchiness:

  • Large, raised bumps that appear puffy and are firm to the touch
  • Redness in the skin surrounding the bump
  • Itchiness that usually lasts a few days

These are caused by the body reacting to proteins and chemicals in the mosquito’s saliva and typically start to occur within a few minutes after being bitten.

More severe reactions can sometimes occur in children or people with immune systems disorders. These may include fevers, swelling, hives, and swollen lymph nodes.

How To Stop Mosquito Bites From Itching

Mosquito bites itch because proteins in mosquito saliva cause your immune system to release histamines, which trigger the itch receptors in your skin.

If left alone, the itchiness usually dissipates within a few hours to a couple of days. However, scratching at the bite will make it last longer.

One of the first things to do after realizing you’ve been bitten by a mosquito is to avoid scratching the area.

According to scientists at the NIH, scratching an itchy bite causes your body to release serotonin. This chemical, which normally helps narrow arteries to clot blood and heal wounds, also triggers receptors on itch-transmitting nerve cells, causing your itch to feel worse.

In addition to stopping yourself from scratching, the Mayo Clinic recommends these methods you can try at home to stop mosquito bites from itching:

  • Use anti-itch medicines such as calamine and hydrocortisone, which can be applied as lotions, creams, or pastes to alleviate itching.
  • Apply a cool compress. Cold temperatures provide a numbing effect around the bite, and can help decrease swelling.
  • Take an oral antihistamine for stronger reactions. Antihistamines directly block histamine receptors to reduce the itchy sensation you feel. You can find nonprescription antihistamines such as Benadryl at most pharmacies and drug stores.

Other Home Remedies For Mosquito Bites

  • Baking Soda — Mix 1 tablespoon of baking soda with 3 tablespoons of water to form a paste. Dab the paste over mosquito-bitten areas and let it sit for 10 minutes before rinsing.
  • Oatmeal — Mix equal parts oatmeal and water into a spackle-like substance. Apply it over the skin for 10 minutes, then wipe it off.
  • Aloe Vera — Apply aloe vera gel over the bite.
  • Honey — Apply a small drop of honey directly over the bite.
  • Basil — Boil 2 cups of water with half an ounce of dried basil leaves. After the mixture cools, dip a washcloth into the liquid and rub it gently on the irritated skin.
  • Tea — Soak a bag of green or black tea and cool it down in the fridge. Apply the cold tea bag over the bite.
  • Rubbing alcohol — Clean the skin around the bitten area with rubbing alcohol, which has a cooling effect that helps relieve itching as it dries. However, be careful to avoid using too much, which can cause further irritation.

Prevention: How To Keep Mosquitoes Away

Effective mosquito control starts with prevention, especially around stagnant water.

Mosquitoes can be tricky pests to get rid of once they’ve established themselves on your property. A single adult female can lay up to 300 eggs in a single batch, which means you might have dozens — or even hundreds — of new mosquitoes hatching every day.

As mentioned earlier in this article, mosquitoes require stagnant water to lay their eggs. By eliminating sources of water, you can slow or stop mosquitoes from breeding and reproducing.

Disney World is a prime example of successful mosquito prevention. Despite being built on humid swampland, there are virtually no signs of these pests. That’s because the water inside the parks is always flowing from one place to the next through a vast network of drainage ditches — it’s never allowed to stagnate anywhere. Even the buildings and landscaping choices are strategically designed to prevent water from collecting.

How To Prevent Mosquitoes Outside Your Home

  • At least once a week, empty and clean out any outdoor items that can hold water, such as chairs, tables, cans, bottles, buckets, flowerpot saucers, and trash cans.
  • Regularly clean and change the water in birdbaths and pools.
  • Ensure that all water storage containers are tightly covered.
  • Use mosquito dunks or mosquito bits to treat large containers with water that cannot be covered or emptied.
  • Clean your gutters regularly to eliminate clogs that may cause water to build up.
  • Avoid overwatering your lawn or garden.
  • Clear leaf piles and other debris.
  • Grow certain plants that naturally repel mosquitoes, such as citronella, lemongrass, lemon balm, lemon thyme, rosemary, lavender, mint, and catnip.
  • Add certain fish species that eat mosquito larvae to outdoor ponds, such as mosquito fish, goldfish, guppies, and koi.

How To Prevent Mosquitoes From Getting Inside

  • Avoid leaving doors and windows open.
  • Install window and door screens.
  • Identify and fix other potential entry points, such as cracks and holes in walls and doors.
  • Seal gaps around screens and underneath doors.
  • Place mosquito-repelling plants near doors and windows.

Using Mosquito Repellants

If you’re looking for strong, long-lasting mosquito repellents, the CDC recommends products containing the following ingredients:

  • DEET
  • Picaridin
  • Oil of lemon eucalyptus (sometimes referred to as OLE or PMD)
  • IR3535
  • 2-undecanone

Oil of lemon eucalyptus (OLE), PMD, IR3535, and 2-undecanone are considered biopesticide repellents, which means they are derived from — or are synthetic versions of — natural products.

Studies have shown that the most effective active ingredients are DEET, picaridin, and IR3535. Among these chemicals, DEET is the oldest and generally considered the gold standard for mosquito repellents. According to the data, the best DEET mosquito sprays are Repel 100 Insect Repellent, OFF Deep Woods Insect Repellent, and Cutter Skinsations Insect Repellent.

It’s important to note that all of the chemicals and products mentioned are well-studied and proven to be safe, but you should always follow the instructions on the product label to determine when and how much to use.

Professional Mosquito Control in NYC

Need help keeping your home or property mosquito-free this summer?

MMPC has over 25 years of experience providing effective and eco-friendly mosquito solutions. We offer comprehensive outdoor treatment programs designed to exterminate mosquitoes and stop them from coming back.

  • EPA-approved, all-natural insecticides to kill adult mosquito populations
  • Scientifically-proven mosquito pods for long-term population control

Learn more about our eco-friendly mosquito control services!