Mosquitoes in Naperville, IL? Check the Retention Pond

• WHAT YOU SEE IN NAPERVILLE

Naperville's newer subdivisions were built with retention ponds and detention basins as part of the stormwater plan, and those ponds hold water through the warm months. You notice mosquitoes at dusk in the backyard, biting around the ankles near the patio or the play set, worse after a rainy week. Standing water anywhere on the property, a gutter elbow, a forgotten kiddie pool, a low spot in new sod that has not graded in yet, adds to it.

• WHAT WE SEE

Mosquitoes rest in shade during the day, not out in the open, so we look at the shaded, damp resting spots first: under deck boards, in tall grass at the property line, along the edge of a retention pond if the yard backs up to one. A gutter elbow holding even an inch of water is a nursery, and newer landscaping that has not fully graded yet tends to hold small low spots that never had a chance to drain properly.

• HOW WE FIX IT

We treat the resting spots directly, the shaded vegetation and damp edges, not a general fog into the air, and point out any standing water on the property worth draining or grading. Products are pet- and kid-safe, which matters in yards built for that use. The yard treatment runs on the same quarterly schedule as the rest of the plan, with closer attention through the peak of mosquito season if the property backs up to water.

• WHEN THEY SHOW UP

Late spring through the first hard frost, worse after rain, and worse near standing water, which in a Naperville subdivision with a retention pond or a detention basin nearby often means the whole warm season. The newer the landscaping, the more likely there are still small low spots that hold water until the yard fully settles.