Skip the Gimmicks
A trap is one layer. Here's the rest of the proven program, ranked — and the gadgets that just burn your money.
What Works — Ranked
Traps are one layer. The proven program is layered — here's the rest, in order of how much it matters:
01 Drain it first
Source reduction is the #1 move — bigger than any trap. Eliminate every bit of standing water you don't need. Then trap or Bti only the water you can't get rid of. Drain what you can; treat what you can't.
02 Bti the rest
Drop Bti in the water you keep — rain barrels, troughs, ditches, low spots. It comes in two forms (see Resupply): Bits (granules) for a fast knockdown, Dunks (floating tablets) for the 30-day hold.
03 Protect yourself
EPA-registered repellent (DEET, picaridin, oil of lemon eucalyptus, or IR3535), and long, loose sleeves at dusk — Culex hunt dusk to dawn.
04 Cut the cover
Keep grass, weeds, and brush trimmed. Adult mosquitoes rest in cool, damp vegetation through the day.
05 Screen & fan
Intact window and door screens keep them out. A box fan on the porch genuinely keeps these weak fliers off you.
06 Back the town
Support the municipal spraying and report standing-water nuisances. The town can even tap SD DOH grant money for mosquito control.
What Doesn't Work
- DynaTraps & UV "mosquito" traps: a less-effective option — they catch some, but mostly snag harmless and beneficial bugs and never touch the breeding source. Supplement at best.
- Bug zappers: electrocute mostly harmless insects, barely dent mosquitoes.
- Ultrasonic repellers: do essentially nothing. Skip them.
- Fake dragonfly decoys: ineffective. Mosquitoes don't read plastic.
- "Build a pond / plant flowers for dragonflies": backfires here — adding standing water cuts against everything else. Our wild dragonflies already work the sloughs.
- Bat houses for mosquito control: great for bats, but the "eats 1,000 a night" claim is a myth — mosquitoes are a tiny part of their diet.