Mosquitoes Infestation

Mosquito Infestations

Every mosquito starts life in water, so large numbers almost always mean a breeding site somewhere close by. Species use water in different ways. Some lay eggs right on the surface of still water, singly or stuck together in small floating rafts. Others lay theirs on damp soil or on the inside walls of containers just above the waterline. Those eggs can sit dry for weeks or months and then hatch soon after rain or rising water covers them. In Florida, that is why mosquito numbers can jump shortly after the first heavy storms of the rainy season. One female can lay a hundred or more eggs at a time and lay several batches, so populations build quickly wherever water is left standing.

Finding Where Your Mosquitoes Are Coming From

You’ll notice the bites long before you find a breeding site, but when you get bitten tells you a lot. Bites around the ankles in broad daylight, in the shade of your own yard, usually point to container-breeding mosquitoes such as the Asian tiger mosquito or the yellow fever mosquito. These species don’t fly far, so the source is likely in your yard or a neighbor’s. Bites mostly at dusk and through the night suggest other species, some of which travel farther.

Next, look for the young. Larvae, often called wigglers, are tiny and dark and squirm up and down in still water. The comma-shaped pupae, or tumblers, roll and dive when disturbed. Check:

• Bromeliads, which hold water in the center of their leaves.
• Clogged gutters, plant saucers, birdbaths and pet bowls.
• Tarps, boat and grill covers, kids’ toys, wheelbarrows and old tires.
• Tree holes, unused or green pools, and dripping outdoor faucets.
• Indoors: vases, plant saucers and drip trays.

Coastal homes can see swarms of salt marsh mosquitoes after high tides or heavy rain flood nearby marshes. These are strong fliers that can travel a long way from where they hatch.

In Florida, mosquito numbers usually climb with the rainy season, roughly June through September or October, and in South Florida they can be active all year. Shady, humid yards with dense ground cover give adults a place to rest during the day. Ready to cut them back? See how to get rid of mosquitoes.