The essentials in 30 seconds
The Asian tiger mosquito (Aedes albopictus) is a small, black mosquito with white bands on its legs and a single white stripe down the middle of its head and back. It bites by day, mostly from early morning to late afternoon, in shade, and goes for the legs, feet and ankles. It lays its eggs just above the water line inside containers: plant saucers, buckets, toys, tires, clogged gutters, tarps and even bottle caps. Eggs stick to the walls and survive drying out for up to 8 months, and the young can develop in about half an ounce of water within 7 to 10 days. The fix is a weekly tip and toss: once a week, empty and scrub, turn over, cover or throw out anything that holds water. Add window and door screens and an EPA-registered repellent for outdoor time.
- Scrub the inside of containers as you empty them: the eggs are glued to the walls.
- Tiger mosquitoes rarely fly more than a few blocks from where they hatch, so the source is usually close.
- In the US, CDC lists dengue, Zika and chikungunya among the viruses this mosquito can spread.
How to identify an Asian tiger mosquito
| Mosquito | What you see | Where it lives |
|---|---|---|
| Asian tiger mosquito (Aedes albopictus) | Black body and legs with bright white bands; one white stripe running down the top of the head and thorax; about 1/4 inch | Outdoors, in and around homes and nearby woods |
| Yellow fever mosquito (Aedes aegypti) | Dark brown with white leg bands and a lyre-shaped pattern of white lines on the back | Close to people, indoors and outdoors |
| Eastern treehole mosquito | Dark and similar in size, but without the single white stripe down the back | Tree holes and containers |
The white center stripe is the quickest test: it separates the tiger mosquito from similar dark species. Males are about 20 % smaller than females and have feathery antennae; only females bite, because they need blood to make eggs.
Behavior that gives it away
- It bites during the day, in shady and cloudy spots more than in direct sun.
- It flies low and bites ankles and lower legs.
- It is persistent: chase it off and it comes back for several more attempts.
- It bites people, dogs, cats, squirrels and birds.
Where tiger mosquitoes come from
The species comes from Southeast Asia and has spread around the world in shipments of used tires and other water-holding goods. In the United States, CDC lists it in southern and southwestern states, and extension entomologists report it established much further north, for example across southern Ohio. It tolerates cooler temperatures than Aedes aegypti, which helps it spread into temperate areas, including southern Europe.
In the UK
The UK Health Security Agency (UKHSA) monitors high-risk sites for invasive mosquitoes. The first tiger mosquito eggs were found in Kent in September 2016, close to the motorway network, with further detections in 2017, 2018, 2019 (three times), 2024 and 2025. So far UKHSA has found no evidence that it has become established, and surveillance continues. If you see an unusual biting mosquito in Britain, you can photograph it and report it through UKHSA's Mosquito Watch online form.
Where tiger mosquitoes breed around the house
Tiger mosquitoes skip marshes and swamps. They want small, still water in containers, and very little of it: the cap of a drink bottle holds enough.
| Where | Why it breeds there | What to do |
|---|---|---|
| Saucers under plant pots | Shallow, shaded, rarely emptied | Empty and scrub weekly, or remove them |
| Buckets, watering cans, toys, wheelbarrows | Collect rain | Turn upside down or store under cover |
| Old tires | A classic breeding site, and how the species spread worldwide | Store under cover or take them for recycling |
| Clogged gutters and downspouts | Leaves trap pools of water | Clear them; see our gutter cleaning guide |
| Tarps, pool and grill covers | Water pools in the folds | Pull them tight or drain after rain |
| Birdbaths and pet water bowls | Standing water for days | Change the water and scrub at least weekly |
| Rain barrels and water butts | Large open surface | Fit a tight lid or fine mesh over every opening |
| Kiddie pools | Left with water in them | Drain and turn over after use |
| Tree holes and hollow stumps | Natural containers | Fill with sand or soil |
| Vases and plants kept in water, indoors | Still water indoors | Change the water and scrub the vase weekly |
| Septic tank vents and cracks | Dark, damp space | Repair cracks and cover vents with fine mesh |
Tip and toss: the weekly check that works
Because a new generation can go from egg to adult in about a week in warm weather, a weekly routine breaks the cycle before any adults emerge. Do it from spring until the first frosts.
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01
Walk the whole property
Yard, patio, balcony, side passages and under decks. Look for anything that can hold even a spoonful of water.
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02
Tip it out
Empty saucers, buckets, toys, covers and birdbaths.
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03
Scrub the inside
Eggs stick to the walls just above the water line and survive months of drying. A brush or a rough sponge removes them.
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04
Turn over, cover or toss
Store containers upside down or under a roof, put tight lids on water storage, and throw away what you do not need.
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05
Check drains and gutters
Clear leaves and mud so water runs away.
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06
Ask the neighbors
Tiger mosquitoes travel only a few blocks. A street that does the routine together sees bigger results.
How to keep them out of the house
- Screens: fit screens on windows and doors and repair any holes.
- Doors: keep doors, including the garage door, closed rather than propped open.
- Air conditioning: use it when you can, with the windows shut. On a patio, a fan may help, as these mosquitoes avoid flying in strong wind.
- Indoor water: check vases, plant saucers and pet bowls weekly too.
- Indoor sprays: use them only if mosquitoes persist after screening and emptying containers, and follow the label.
Which repellent works against tiger mosquitoes
CDC recommends repellents registered by the US Environmental Protection Agency (EPA) that contain one of these active ingredients:
| Active ingredient | Notes |
|---|---|
| DEET | Synthetic |
| Picaridin | Synthetic; called icaridin outside the US |
| IR3535 | Synthetic |
| Oil of lemon eucalyptus (OLE) | Plant-based; avoid on children under 3 |
| Para-menthane-diol (PMD) | Avoid on children under 3 |
| 2-undecanone | Plant-based |
How to use them safely, following CDC advice:
- Follow the label for the amount and reapply as directed.
- Apply to exposed skin; skip the skin under clothing.
- Using sunscreen? Put sunscreen on first, then repellent.
- For children, put repellent on your own hands and then on the child's face, and keep it off their hands, eyes, mouth, cuts and irritated skin.
- Dress children in clothes that cover arms and legs, and cover strollers and baby carriers with mosquito netting.
- Permethrin-treated clothing adds protection through several washes; it is for clothing and gear only, never skin.
Tiger mosquito bites and health
A tiger mosquito bite is like other mosquito bites: a small, raised, itchy bump. People often get several on the ankles at once because the mosquito keeps coming back. NHS advice for bites:
- Wash the skin with soap and water.
- Hold a cold pack wrapped in a cloth, or a cold wet cloth, on a swollen bite for at least 20 minutes.
- Ask a pharmacist about antihistamines or a hydrocortisone cream for the itch.
- Leave the bites alone: scratching can lead to infection.
- See a pharmacist or doctor if the skin turns hot, red and painful or pus appears.
Call 911 (999 in the UK) if the lips, mouth, throat or tongue swell suddenly, or breathing becomes difficult.
Diseases
CDC lists dengue, Zika and chikungunya among the viruses the Asian tiger mosquito can spread. Because it also feeds on animals, it is less likely to spread them than Aedes aegypti, and Ohio State entomologists note it is not considered a major public health threat in the US. Risk depends on whether those viruses are circulating locally, which is why health departments track it. If you develop a fever after travel to an area where dengue, Zika or chikungunya circulate, see a doctor and mention the trip.
When to ask for help
- You keep up the weekly routine for three or four weeks and bites stay frequent: the source may be on a neighboring property, a blocked drain or a roof gutter you cannot reach.
- There is a large water feature, abandoned pool or drainage problem you cannot empty.
- Your county or city runs a mosquito control program: report breeding sites and biting problems to it.
Ask a pest control company to start with an inspection for breeding sites rather than spraying alone.
Asian tiger mosquito: frequently asked questions
How can I tell if it is an Asian tiger mosquito?
It is small and black with white bands on the legs and a single white stripe down the middle of its head and back. It bites during the day.
Why are mosquitoes biting me during the day?
The Asian tiger mosquito is a daytime biter. It feeds mostly from early morning to late afternoon, especially in shade and on cloudy days.
How do I get rid of tiger mosquitoes?
Remove their breeding water: once a week, empty and scrub, turn over, cover or throw out anything that holds water. Add screens and use a registered repellent outdoors.
What does a tiger mosquito bite look like?
A small, raised, itchy bump, often several around the ankles and lower legs.
What repellent works on tiger mosquitoes?
EPA-registered products with DEET, picaridin, IR3535, oil of lemon eucalyptus, PMD or 2-undecanone, used as the label says.
Do Asian tiger mosquitoes carry diseases?
They can spread dengue, Zika and chikungunya, though less readily than Aedes aegypti. Local risk depends on whether those viruses are circulating.
How far do tiger mosquitoes fly?
Only a few blocks over their life, which is why the breeding site is usually on your property or next door.
Is the Asian tiger mosquito in the UK?
It has been detected several times since 2016, mostly in Kent, but UKHSA has found no evidence it is established.
Sources
Official health and university guidance, checked on 27 October 2026.
- CDC · Mosquito control at home ↗The weekly empty, scrub, turn over, cover or throw out routine, covers and mesh, septic tanks, larvicides, screens and indoor measures.
- CDC · Life cycle of Aedes mosquitoes ↗Eggs above the water line, survival for up to 8 months dry, 7 to 10 days to adult, flight range of a few blocks.
- CDC · Most (un)wanted mosquitoes ↗Appearance of both Aedes species, viruses spread, where in the US, and why albopictus is less likely to spread them.
- CDC · Preventing mosquito bites ↗EPA-registered active ingredients, OLE and PMD under age 3, skin under clothing, reapplying, sunscreen first, children, permethrin, screens and air conditioning.
- NHS · Insect bites and stings ↗How mosquito bites look, home treatment, when to see a pharmacist and when to call 999.
- Ohio State University Extension · Asian tiger mosquito (ENT-87) ↗Size, white stripe, treehole mosquito look-alike, daytime biting on legs and ankles, hosts, half an ounce of water, flight distance, possible diseases and US public health status.
- UKHSA · Qualitative assessment of the risk chikungunya virus presents to the UK ↗UK detections from 2016 to 2025 and no evidence of establishment.
Bitten on the patio this afternoon?
Walk the yard tonight with a brush and empty every saucer, bucket and cover, then repeat the check every week.