Prevent Mosquito Breeding, Prevent Mosquitoes

Remove Standing Water

Mosquitoes must have standing water to breed. Even 1/4" is enough water for a female mosquito to lay her eggs in. Invasive Aedes mosquitoes can even breed indoors.

Eliminate stagnant water around your home so mosquitoes can't breed.

Examples of mosquito breeding sources include:

  • Flowerpot saucers
  • Rain barrels
  • Clogged rain gutters
  • Bird baths
  • Fountains
  • Ponds
  • Tires
  • Pet bowls
  • Green swimming pools
  • Bromeliads
  • Containers and buckets
  • Landscaping drains
  • Trash cans
  • Discarded cans and bottles
  • Tarps
  • Children's toys
  • Flower vases
  • Wheelbarrows


mosquito larvae

Keep an eye out for mosquito larvae! Each of these larvae can turn into an adult mosquito in less than a week.

Rain Barrel
Water pond
buckets with water
flower pot saucer
Tire collecting water
Green swimming pool
container with water
flower vase

Check out our Mosquito Prevention Checklist for more ideas.


Biological Control of Mosquitoes


Mosquito fish (Gambusia affinis) can be used to control mosquitoes in larger containers of water. Each mosquitofish can eat its weight in mosquitoes every day. The Vector Control Program provides mosquito fish to residents free of charge. 

Learn more about mosquitofish or pick up free fish at one of these locations for free to control mosquito breeding in:

  • Green swimming pools
  • Backyard ponds
  • Fountains 



Bacterial Larvicides

Bacillus thuringiensis subspecies israelensis (Bti) is a natural bacteria that kills mosquito and fly larvae, but will not hurt animals. It can be put into standing water to prevent development of larvae. Available for purchase in hardware and garden stores. Learn more about Bti

mosquito dunks