How to Have a Pond Without Attracting Mosquitoes

Ponds can be a wonderful addition to a backyard.

Pond Design

Female mosquitoes lay 100 to 300 eggs at a time.Female mosquitoes lay 100 to 300 eggs at a time.
However, ponds are known to attract mosquitoes. A few minor adjustments to your pond, and you can avoid this problem. Read on to learn how to have a pond without attracting mosquitoes.

Scoop up some of your pond's water into a white cup or bowl. If you see any wriggling objects against the white surface, you have problems with mosquitoes.

Still dark water are breeding grounds for mosquitoes.

Look at your pond. If there is any areas that has still water, your pond is a breeding ground for mosquitoes. This includes the surface of aquatic plants and water in the top of pots.

Mosquitoes cannot lay eggs on moving water.

Agitating the water's surface with a fountain will prevent female mosquitoes from being able to lay their eggs.

Hanging vegetation can be breeding ground for mosquitoes.

Vegetation that hands over the edge of the pond can provide dark still water. Trim any vegetation that hangs over the edge and thin out any vegetation along the sides to allow the water to move freely through it.

Using Mosquito Eaters

Mosquitofish love to eat mosquitoe larva.

One of the best methods for controlling mosquitoes in ponds is mosquito fish. Mosquito fish are native to the southern United States. Add between 35 to 100 fish to an ornamental pond. For larger ponds, add about 1000 per acre.

Mosquito fish can be aggressive toward other fish. In these cases, add minnows, guppies or small goldfish.

Tadpoles also eat mosquito larva.

Keep in mind that an alternative to fish are tadpoles. Tadpoles eat mosquito larvae and grow up to become mosquito-eating toads or frogs.

Try to encourage a few toads into your garden. One toad will eat about 100 mosquitoes each night.

Periodically raise and lower the level of your ponds water to ensure that the fish or tadpoles have access to all areas of your pond.

Add Chemicals

Try adding Bti (Bacillus thuringiensis), a naturally occurring type of bacteria that kills mosquito larvae and some fly larvae. Bti is not harmful to fish, pets, wildlife or humans.

Methroprene can control late-stage mosquito larvae, but may be damaging to frogs and other wildlife. Don't use this in your pond.

Oil is an older remedy for controlling mosquitoes because it puts a film on the water that prevents the larvae from breathing. However, it also damages plants and beneficial aquatic insects. Some mosquito control agencies have access to approved oil that is used for this purpose. Contact them if none of the above steps have helped. Cooking and vegetable oil do not work.

Things You Will Need

  • Pond
  • Aerator
  • Mosquito fish


  • Larger koi do not eat mosquito larvae.
  • Be careful when adding any chemicals to your pond.

About the Author

Darcy Logan has been a full-time writer since 2004. Before writing, she worked for several years as an English and special education teacher. Logan published her first book, "The Secret of Success is Not a Secret," and several education workbooks under the name Darcy Andries. She received her Bachelor of Arts in English and Master of Arts in special education from Middle Tennessee State University.