No food: 2–12 days with water, 3.8 on average (Manda et al. 2007). Sugar: 29 days on average in an indoor hut (Okech et al. 2003); 21–54 days at 22 °C in lab studies. Blood only: 14 days. Breeding: a blood-fed female can lay eggs in vases, saucers and pet bowls — empty and scrub them weekly (CDC).
How long can mosquitoes live in your house?
Anywhere from two days to a few weeks — and food decides most of it. A mosquito that flies in through an open door finds an odd world: no flowers, few hiding places, and air that is often warmer and drier than outside. How long does a mosquito live in your house depends above all on whether it can find sugar (a fruit bowl, a houseplant in flower, a sticky spill) and whether it gets a blood meal from someone sleeping.
The best direct evidence comes from an experiment in an indoor test hut in western Kenya. Female malaria mosquitoes given only sugar lived 29 days on average, those given only blood 14 days, and those given both 33 days (Okech et al. 2003). Lab studies of other species agree that sugar is what keeps adults alive: at a typical room temperature of 22 °C (72 °F), sugar-fed female mosquitoes of the four species we track average 21–54 days.
Put another way, how long do mosquitoes live in your house and how long can mosquitoes live in a house are really questions about food. How long do mosquitoes live in a house with a fruit bowl? Weeks. In a bare spare room? Days. (The same goes for searches like "how long can mosquito live in house".)
So how long can a mosquito live in a house with nothing to eat? Only days. In a lab study, mosquitoes with water but no sugar lived 2–12 days, 3.8 on average; with no water either, 2–6 days (Manda et al. 2007). If you have one buzzing around your bedroom for a week, it has almost certainly fed — on a plant, on fruit or on you.
Can mosquitoes live in your house?
Yes, and some species prefer it. The yellow fever mosquito "readily" bites "during the day and indoors as well as outdoors" (UF/IFAS), and the CDC describes indoor mosquitoes resting in "dark, humid places like under sinks, in showers, in closets, under furniture, or in the laundry room". Can mosquitoes live in your house for weeks? A well-fed female can; most don't, because they're swatted, trapped or dried out first.
Mosquitoes in the bedroom
Bedrooms are where most people meet indoor mosquitoes, because a sleeping person is easy to find: females follow the carbon dioxide in our breath, then switch to sight within about 5–15 metres and to body heat at close range (van Breugel et al. 2015). After a blood meal a female has several days of digesting and egg development ahead of her (Goindin et al. 2015), and the CDC's list of indoor resting places — under furniture, in closets, under sinks — is where to look for her.
Lifespan of a mosquito in a house vs outdoors
The lifespan of a mosquito in a house can actually be longer than outside, because a house has no birds, dragonflies or wind — or much shorter, because it has no nectar and the air can be very dry. Outdoors, mosquito-control districts say most females live under two weeks and most males under a week (Coachella Valley MVCD).
| What it can get | Lab studies | Indoor test hut | Source |
|---|---|---|---|
| Sugar (fruit, plants, spills) | 21–54 days at 22 °C in the lab | 29 days (indoor test hut) | Okech et al. 2003; lab studies at 22 °C |
| Blood only (has bitten, no sugar) | — | 14 days (indoor test hut) | Okech et al. 2003 |
| Blood and sugar | — | 33 days (indoor test hut) | Okech et al. 2003 |
| Water but no food | 2–12 days, 3.8 on average | — | Manda et al. 2007 |
| Nothing at all, not even water | 2–6 days, 3 on average | — | Manda et al. 2007 |
In practice, how long do mosquitoes live in the house — or how long does a mosquito live inside a house rather than a garden — comes down to three questions: is there sugar, has it bitten someone, and is there water? The calculator above works through all three for your room's temperature and humidity.
Mosquito lifespan in house temperatures
Room temperature is close to ideal for mosquitoes. In the lab studies we use, sugar-fed females average 21–69 days at 18 °C, 21–54 days at 22 °C and 13–60 days at 27 °C. Those are upper limits from cages with sugar every day; the mosquito lifespan in house conditions is usually shorter. For how temperature and species change the figures, see the mosquito lifespan calculator.
How long do mosquitoes live indoors without food?
About three to four days on average, and rarely more than a week and a half. With water but no sugar or blood, lab mosquitoes lived 2–12 days (3.8 on average), and with no water either, 2–6 days (Manda et al. 2007). A spotless room with no plants, fruit or people is a short stay for a mosquito. For the full picture — survival on sugar only, after a bite, and the myth that mosquitoes die after biting — see how long a mosquito can live without blood or food.
Can mosquitoes breed inside your house?
Yes, if they find standing water. Can mosquitoes breed indoors? A female that has had a blood meal needs only a small amount of still water to lay her eggs, and the CDC's advice to empty and scrub water-holding items once a week explicitly includes indoor items "such as vases or flowerpot saucers, to remove mosquito eggs and larvae" (CDC). The yellow fever mosquito in particular lays in containers around homes, including "potted plant trays and saucers" (EPA).
| Spot | Why it matters | What to do | Source |
|---|---|---|---|
| Vases of cut flowers | Standing water a female can lay eggs on; CDC lists vases among indoor items to check | Change the water and scrub the vase at least weekly | CDC |
| Flowerpot saucers and plant trays | A favourite egg site of the yellow fever mosquito (EPA) | Tip out and scrub weekly, or water so none collects | CDC; EPA |
| Pet water bowls | Water that sits between refills, often for days | Empty, scrub and refill rather than topping up | CDC |
| Buckets and stored water | Open water storage | Turn empty buckets over; tightly cover any you keep full | CDC |
Timing matters. Mosquito eggs hatch within a day or two, and in warm water larvae can become flying adults in about a week (CDC: 7–10 days for Aedes and Culex). That's why the weekly rule works: water emptied every seven days never produces adults. The mosquito life cycle calculator works out the exact dates for your water temperature.
Do air conditioning and dry air kill mosquitoes indoors?
Dry air shortens their lives; air conditioning on its own hasn't been tested. We found no study that measured how long a mosquito survives in an air-conditioned room, so we won't claim that mosquitoes die in AC. What the research does show:
- Dry air raises the death rate sharply. Pooling 17 studies of yellow fever and Asian tiger mosquitoes, researchers found the risk of death at 27.5 °C was about 4.8 times higher at 67% humidity, 6.7 times higher at 33% and 9.2 times higher in completely dry air than in saturated air (Schmidt et al. 2018).
- Cooler isn't always worse for them. In the lab, female yellow fever mosquitoes lived longer at 20–25 °C than at 30 °C (Doeurk et al. 2025), so cooling a hot room to a comfortable temperature doesn't shorten a mosquito's life by itself.
- Air conditioning is a CDC prevention step. The CDC recommends window and door screens and, where possible, air conditioning to keep mosquitoes outside.
So a mosquito in an air-conditioned room may die sooner if the air is dry and there's nothing to drink or eat — but the calculator only changes its estimate through the temperature and humidity you enter.
How to get a mosquito out of your house
You don't need sprays. If you're wondering how to get rid of a mosquito in the house — or how long can a mosquito live inside if you simply leave it — these non-toxic steps follow CDC advice:
- Look where it rests: dark, humid spots under sinks, in showers, closets, under furniture and in the laundry room (CDC). Our step-by-step mosquito finder ranks the spots for your room and time of day.
- Trap it, don't spray it: when it lands on a wall, cover it with a glass and slide a card underneath, or use a vacuum hose.
- Take away its food: cover the fruit bowl and wipe sugary spills; without sugar a mosquito lasts only days (Manda et al. 2007).
- Empty indoor water weekly: vases, flowerpot saucers and pet bowls (CDC).
- Stop the next one: install or repair window and door screens, and use air conditioning when you can (CDC).
If you keep finding mosquitoes indoors week after week, they are probably breeding nearby — in a gutter, a bird bath or a forgotten bucket. Tipping out every container once a week is the single most effective step (CDC; EPA).
How this indoor mosquito calculator works
The calculator picks the right study for each situation and never invents a figure:
- Sugar sources: the lab range for sugar-fed female mosquitoes at your temperature, from the same data as our mosquito lifespan calculator (Doeurk et al. 2025; Marini et al. 2020; Ciota et al. 2014; Christiansen-Jucht et al. 2014). The indoor test hut average of 29 days (Okech et al. 2003) is shown alongside.
- Has bitten someone: the 14-day average for blood-only females in the indoor hut (Okech et al. 2003). That study didn't vary temperature, so neither does this figure.
- Nothing to eat: 2–12 days with water, or 2–6 days if you answer "No" to standing water (Manda et al. 2007).
- Humidity moves the marker toward the short end (dry) or long end (humid) of the range, following Schmidt et al. (2018); the studies don't give exact days for each humidity, so the range itself doesn't change.
- Air conditioning adds advice only — no study has timed mosquitoes in air-conditioned rooms.
- Standing water decides whether a blood-fed female can lay eggs indoors, using the time from blood meal to eggs (Goindin et al. 2015; Marini et al. 2020; Christiansen-Jucht et al. 2015) and the egg-to-adult time from the life cycle calculator.
Temperatures from 15 to 35 °C (59–95 °F) are accepted, the range covered by the studies.
Frequently asked questions
How long can mosquitoes live in your house?
From about 2 days with nothing to eat to several weeks with sugar. In an indoor test hut, sugar-fed females lived 29 days on average and blood-fed ones 14 (Okech et al. 2003).
How long does a mosquito live in the house without food?
Usually 3–4 days: 2–12 days with water and 2–6 days without (Manda et al. 2007).
How long do mosquitoes live inside a house with plants?
Longer — flowering plants and fruit provide sugar. Sugar-fed females average 21–54 days at 22 °C in lab studies.
Do mosquitoes die inside?
Eventually, and sooner than outdoors if there's no sugar, no water and dry air. Indoors, most die within days to a couple of weeks.
Can mosquitoes breed indoors?
Yes. A blood-fed female can lay eggs in vases, flowerpot saucers or pet bowls. The CDC advises emptying and scrubbing them once a week.
Do mosquitoes die in AC?
Not because of the air conditioning itself — no study has shown that. Dry air does raise their death rate (Schmidt et al. 2018), and AC with screens keeps new ones out (CDC).
Where do mosquitoes hide in a house?
In dark, humid places: under sinks, in showers, in closets, under furniture and in the laundry room (CDC).
Why is there a mosquito in my bedroom?
It followed the carbon dioxide in your breath and your body heat (van Breugel et al. 2015). Check screens and nearby standing water.
How long can a mosquito live indoors after biting me?
About 14 days on blood alone in an indoor hut study, or 33 days if it also finds sugar (Okech et al. 2003).
How do I get rid of a mosquito in the house without spray?
Find its resting spot, trap it under a glass or vacuum it, remove sugar sources and empty indoor water weekly (CDC).
Is the lifespan of a mosquito in a house longer than outside?
It can be if there's sugar and no predators, but usually it's shorter because houses lack nectar and the air is often dry.
These calculators give estimates for education. Real flies vary with strain, food, humidity and temperature. For a stubborn infestation, your local cooperative extension service can help identify the insect. We give no pesticide advice.