posted 6 years ago
Encouraging the presence of creatures that prey on mosquito is the best option, alongside making sure not let containers of standing water sit around outside your house. Do things to attract birds. Plant a few dense bushes on your property to provide nesting habitat for songbirds. If you don't have ducks or other waterfowl, but want them, they can help with this problem. If these bio-mechanical techniques don't work and you have a severe infestation, consider targeted use of the naturally occurring soil bacterium Bacillus thuringiensis israelensis, or BT-i. It's often sold as tablets or "donuts" you can place in water. Eliminate all standing water except one or two containers, and apply one or a few of these tablets to the container of water. This bacteria is highly targeted, mostly affecting mosquito, fungus gnat, and some larval stages of flies. The insect must consume the bacteria to be killed, and since it is in the standing water, i.e. prime nesting site for mosquitoes, the larvae will be exposed. I wouldn't suggest putting this in ponds, etc. as it could disrupt the ecosystem there, despite this being a naturally occurring soil bacteria.