That thin whine in a dark bedroom can wreck a whole night. To get rid of mosquitoes inside house and home, you're really doing two jobs at the same time. You kill the adults already resting indoors, and you shut off the entry points and the bits of standing water that let new ones show up. Treating a room isn't the same as treating a yard, but none of it is hard.
Quick answer
Vacuum mosquitoes off their resting spots under sinks, behind toilets, and in dark closets, then dump any standing water in plant saucers and drip trays so they can't breed inside. Repair torn screens and seal gaps around doors and windows to stop new ones from getting in.
Dealing with this right now?
Sealed the gaps, dumped the water, and still hearing that buzz after dark? Get matched with a licensed local pro who'll treat the yard outside your door, where the trouble usually starts.
Looking for a pro? Learn about professional mosquito control and get matched with a licensed local company.
Start by finding where they're hiding
Indoor mosquitoes get busy at dawn and dusk. The rest of the day they tuck into cool, dark, humid spots and wait. Learn those spots and you can go after them on purpose, instead of swatting at the air at 2 a.m.
Picture where you'd nap if you were a mosquito: low, shadowed, out of the breeze. Check those places. Once you find the resting spots, you can vacuum them out or treat the area straight on.
- Under sinks, behind toilets, around tubs and shower drains
- Inside closets, laundry rooms, and dark storage corners
- Behind curtains, furniture, and big appliances
- Around houseplants and the saucers that hold their runoff
- In basements, crawl spaces, and unfinished utility areas
Cut off the water they breed in
A mosquito that gets inside will breed inside if it finds standing water. And a startling number of everyday items hold exactly that. Dry those spots up and the cycle stops under your own roof.
Walk the house with breeding on your mind. Anything that keeps water sitting for more than a few days can turn into a nursery, so empty it, dry it, or swap the water out on a schedule.
- Overwatered plant saucers and decorative vases
- Pet water bowls that sit for days without a change
- Drip trays under the fridge, AC unit, or dehumidifier
- Slow drains and water pooling in sinks or tubs
- Buckets, mop water, and forgotten containers in the laundry room
Kill the adults already inside
Found the resting spots? A vacuum with a hose attachment is one of the simplest, least toxic ways to clear them out. Seal the bag or empty the canister right after so nothing crawls back out.
In a closed room, a fan or a plug-in trap earns its keep. Mosquitoes are weak fliers and they fight a losing battle against moving air. If the problem digs in, an indoor-labeled insecticide can go into the cracks and crevices where they rest. Read the label, and keep it away from food, kids, and pets.
Seal the gaps they're coming through
Clearing the room is wasted effort if more keep wandering in. Mosquitoes slide through openings you'd never look twice at, so one careful pass around the doors and windows pays for itself fast.
Screens are your first line of defense. Go over them for the small tears and loose corners that work like a propped-open door.
- Repair or replace torn window and door screens
- Add weatherstripping and door sweeps to close gaps under doors
- Caulk around windows, vents, and where pipes pass through walls
- Keep exterior doors shut, especially at dawn and dusk
- Check the screens on attic vents and crawl-space openings
Make the indoors less inviting
A couple of habits make your home a worse place to settle. Run a dehumidifier or the AC and you pull down the humidity mosquitoes love, which makes every resting spot above far less comfortable for them.
Let the air do some of the work
Moving air helps too. A ceiling fan or an oscillating fan keeps a steady current going, and weak fliers can't navigate it or land on you while you sleep. It's a quiet, no-chemical layer you can leave running all night.
When the problem won't quit
You've sealed the gaps, dumped the standing water, and you still hear that whine. The source is almost always just outside, and the yard is quietly feeding the house. The most effective move now is to knock the population down at the property line so fewer ever reach the door.
A licensed local pro can look inside and out, treat the shaded resting and breeding spots around the home, and lay a residual barrier that keeps new mosquitoes from stacking up near your entrances. Fix it outside and the quiet night inside usually follows.