What kills mosquitoes instantly?

What kills mosquitoes instantly includes physical methods and certain chemicals that cause rapid death on contact, though prevention of breeding and repellents are more effective for long-term control than killing individuals. Fastest way to kill mosquito instantly is physical swatting with hand, fly swatter, or electric bug zapper racket that electrocutes on contact, killing immediately, though swatting requires close contact. Vacuuming with strong suction removes mosquito instantly. Chemical methods that kill instantly on contact include insecticide sprays containing pyrethrins, pyrethroids, or permethrin that kill on contact within seconds when sprayed directly, and mosquito foggers that kill many at once. Natural methods like soapy water spray kills mosquitoes by clogging spiracles and causing suffocation, though not instant. For larvae, Bacillus thuringiensis israelensis kills larvae in standing water. However, killing individual mosquitoes is not effective for population control, as mosquitoes breed rapidly in standing water, with one female laying hundreds of eggs, so eliminating breeding sites is key, empty standing water in flower pots, tires, gutters, and bird baths weekly, use mosquito dunks with Bti in water that cannot be emptied, install screens on windows and doors, and use repellents containing DEET, picaridin, or oil of lemon eucalyptus to prevent bites. Professional pest control can treat yards with barrier sprays. So instant kill methods exist, but prevention is best.