Mosquito Control in McAllen, TX

Why your citronella candles are losing

The mosquitoes ruining Valley evenings mostly aren't flying in from the resacas — they're container breeders raised on your block. Aedes aegypti, the RGV's signature backyard mosquito, lays eggs in plant saucers, bird baths, clogged gutters, kids' toys, the tarp over the grill, and the French drain that never quite dries. It bites at ankle height, in daylight, and rarely travels more than a couple hundred feet from where it hatched. That's actually good news: a yard treated correctly, with its breeding sites handled, gets dramatically better even if the whole neighborhood doesn't.

What the service is

• Barrier treatment of resting surfaces — shaded foliage, under decks, fence lines, eaves — where mosquitoes wait out the heat, applied monthly during season. Ticks wait for the dog in that same shade, and tick control for McAllen yards and kennels has its own page.
• Breeding-site sweep every visit: every standing-water source on the property gets tipped, treated, or flagged. This half of the job is the half spray-only companies skip.
• Larvicide in water that can't be dumped — drains, fountains, low spots — using the same bacterial products (Bti) mosquito-control districts use, safe for pets and birds.
• Typical pricing: $75–$110 per monthly visit for an average yard; most Valley homes run treatments from March into November at minimum, and many bundle it with the quarterly plan that already covers roaches and ants. Event treatments (quinceañeras, backyard weddings) available. A full season's math for a typical yard is worked out on the mosquito control cost page.

McAllen's mosquito year, month by month

The table uses the 1991–2020 climate normals NOAA publishes for McAllen Miller International Airport: the average daily high and low and the average rainfall for each month. The notes beside them lean on three sources. Texas A&M AgriLife Extension entomologist Sonja Swiger, Ph.D., says mosquitoes typically are not around once the thermometer dips below the mid-50s. The CDC says an Aedes egg takes 7 to 10 days to become an adult mosquito. And a Hidalgo County surveillance study published in 2021 trapped Aedes aegypti in 11 of the 12 months of 2018.

The practical reading: there is no month in McAllen when the water in your yard stops mattering. The same Hidalgo County study saw mosquito activity carry on through cooler weather and recorded none below 40°F, and the city's coldest normal low, 52.7°F in January, sits well above that line.

Worth knowing about the Valley

Hidalgo County runs active mosquito surveillance because the Valley is one of the few places in the U.S. with a history of locally transmitted dengue — that's the practical reason to take Aedes control seriously, beyond comfort. It's also why the approach here leans on source elimination and not just fog-and-go: knocking down adults looks impressive for a weekend, but the eggs already laid in your gutter don't care. And the free tip that outperforms any product: walk your yard after each rain and dump anything holding water. Ten minutes, huge difference — and the barrier treatment still earns its place on top of it. A spot-by-spot version of that walk, from plant saucers to soggy lawn edges, is on the page about what attracts mosquitoes to a McAllen yard.